21980640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:233

約数の個数: 192

約数和(自身を含む): 79252992

約数和(自身を除く): 57272352

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 32, 33, 40, 44, 46, 48, 55, 60, 66, 69, 80, 88, 92, 96, 110, 115, 120, 132, 138, 160, 165, 176, 181, 184, 220, 230, 240, 253, 264, 276, 330, 345, 352, 362, 368, 440, 460, 480, 506, 528, 543, 552, 660, 690, 724, 736, 759, 880, 905, 920, 1012, 1056, 1086, 1104, 1265, 1320, 1380, 1448, 1518, 1760, 1810, 1840, 1991, 2024, 2172, 2208, 2530, 2640, 2715, 2760, 2896, 3036, 3620, 3680, 3795, 3982, 4048, 4163, 4344, 5060, 5280, 5430, 5520, 5792, 5973, 6072, 7240, 7590, 7964, 8096, 8326, 8688, 9955, 10120, 10860, 11040, 11946, 12144, 12489, 14480, 15180, 15928, 16652, 17376, 19910, 20240, 20815, 21720, 23892, 24288, 24978, 28960, 29865, 30360, 31856, 33304, 39820, 40480, 41630, 43440, 45793, 47784, 49956, 59730, 60720, 62445, 63712, 66608, 79640, 83260, 86880, 91586, 95568, 99912, 119460, 121440, 124890, 133216, 137379, 159280, 166520, 183172, 191136, 199824, 228965, 238920, 249780, 274758, 318560, 333040, 366344, 399648, 457930, 477840, 499560, 549516, 666080, 686895, 732688, 915860, 955680, 999120, 1099032, 1373790, 1465376, 1831720, 1998240, 2198064, 2747580, 3663440, 4396128, 5495160, 7326880, 10990320, 21980640]

約数ペア:

[(1, 21980640), (2, 10990320), (3, 7326880), (4, 5495160), (5, 4396128), (6, 3663440), (8, 2747580), (10, 2198064), (11, 1998240), (12, 1831720), (15, 1465376), (16, 1373790), (20, 1099032), (22, 999120), (23, 955680), (24, 915860), (30, 732688), (32, 686895), (33, 666080), (40, 549516), (44, 499560), (46, 477840), (48, 457930), (55, 399648), (60, 366344), (66, 333040), (69, 318560), (80, 274758), (88, 249780), (92, 238920), (96, 228965), (110, 199824), (115, 191136), (120, 183172), (132, 166520), (138, 159280), (160, 137379), (165, 133216), (176, 124890), (181, 121440), (184, 119460), (220, 99912), (230, 95568), (240, 91586), (253, 86880), (264, 83260), (276, 79640), (330, 66608), (345, 63712), (352, 62445), (362, 60720), (368, 59730), (440, 49956), (460, 47784), (480, 45793), (506, 43440), (528, 41630), (543, 40480), (552, 39820), (660, 33304), (690, 31856), (724, 30360), (736, 29865), (759, 28960), (880, 24978), (905, 24288), (920, 23892), (1012, 21720), (1056, 20815), (1086, 20240), (1104, 19910), (1265, 17376), (1320, 16652), (1380, 15928), (1448, 15180), (1518, 14480), (1760, 12489), (1810, 12144), (1840, 11946), (1991, 11040), (2024, 10860), (2172, 10120), (2208, 9955), (2530, 8688), (2640, 8326), (2715, 8096), (2760, 7964), (2896, 7590), (3036, 7240), (3620, 6072), (3680, 5973), (3795, 5792), (3982, 5520), (4048, 5430), (4163, 5280), (4344, 5060)]