18991617920

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{2381}}^1$

素因数の和:2525

約数の個数: 192

約数和(自身を含む): 50410170720

約数和(自身を除く): 31418552800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 103, 110, 121, 128, 160, 176, 206, 220, 242, 320, 352, 412, 440, 484, 515, 605, 640, 704, 824, 880, 968, 1030, 1133, 1210, 1408, 1648, 1760, 1936, 2060, 2266, 2381, 2420, 3296, 3520, 3872, 4120, 4532, 4762, 4840, 5665, 6592, 7040, 7744, 8240, 9064, 9524, 9680, 11330, 11905, 12463, 13184, 15488, 16480, 18128, 19048, 19360, 22660, 23810, 24926, 26191, 32960, 36256, 38096, 38720, 45320, 47620, 49852, 52382, 62315, 65920, 72512, 76192, 77440, 90640, 95240, 99704, 104764, 124630, 130955, 145024, 152384, 181280, 190480, 199408, 209528, 245243, 249260, 261910, 288101, 304768, 362560, 380960, 398816, 419056, 490486, 498520, 523820, 576202, 725120, 761920, 797632, 838112, 980972, 997040, 1047640, 1152404, 1226215, 1440505, 1523840, 1595264, 1676224, 1961944, 1994080, 2095280, 2304808, 2452430, 2697673, 2881010, 3352448, 3923888, 3988160, 4190560, 4609616, 4904860, 5395346, 5762020, 7847776, 7976320, 8381120, 9219232, 9809720, 10790692, 11524040, 13488365, 15695552, 16762240, 18438464, 19619440, 21581384, 23048080, 26976730, 29674403, 31391104, 36876928, 39238880, 43162768, 46096160, 53953460, 59348806, 78477760, 86325536, 92192320, 107906920, 118697612, 148372015, 156955520, 172651072, 184384640, 215813840, 237395224, 296744030, 345302144, 431627680, 474790448, 593488060, 863255360, 949580896, 1186976120, 1726510720, 1899161792, 2373952240, 3798323584, 4747904480, 9495808960, 18991617920]

約数ペア:

[(1, 18991617920), (2, 9495808960), (4, 4747904480), (5, 3798323584), (8, 2373952240), (10, 1899161792), (11, 1726510720), (16, 1186976120), (20, 949580896), (22, 863255360), (32, 593488060), (40, 474790448), (44, 431627680), (55, 345302144), (64, 296744030), (80, 237395224), (88, 215813840), (103, 184384640), (110, 172651072), (121, 156955520), (128, 148372015), (160, 118697612), (176, 107906920), (206, 92192320), (220, 86325536), (242, 78477760), (320, 59348806), (352, 53953460), (412, 46096160), (440, 43162768), (484, 39238880), (515, 36876928), (605, 31391104), (640, 29674403), (704, 26976730), (824, 23048080), (880, 21581384), (968, 19619440), (1030, 18438464), (1133, 16762240), (1210, 15695552), (1408, 13488365), (1648, 11524040), (1760, 10790692), (1936, 9809720), (2060, 9219232), (2266, 8381120), (2381, 7976320), (2420, 7847776), (3296, 5762020), (3520, 5395346), (3872, 4904860), (4120, 4609616), (4532, 4190560), (4762, 3988160), (4840, 3923888), (5665, 3352448), (6592, 2881010), (7040, 2697673), (7744, 2452430), (8240, 2304808), (9064, 2095280), (9524, 1994080), (9680, 1961944), (11330, 1676224), (11905, 1595264), (12463, 1523840), (13184, 1440505), (15488, 1226215), (16480, 1152404), (18128, 1047640), (19048, 997040), (19360, 980972), (22660, 838112), (23810, 797632), (24926, 761920), (26191, 725120), (32960, 576202), (36256, 523820), (38096, 498520), (38720, 490486), (45320, 419056), (47620, 398816), (49852, 380960), (52382, 362560), (62315, 304768), (65920, 288101), (72512, 261910), (76192, 249260), (77440, 245243), (90640, 209528), (95240, 199408), (99704, 190480), (104764, 181280), (124630, 152384), (130955, 145024)]