20319120

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 160

約数和(自身を含む): 73209600

約数和(自身を除く): 52890480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 48, 54, 60, 69, 72, 80, 90, 92, 108, 115, 120, 135, 138, 144, 180, 184, 207, 216, 230, 240, 270, 276, 345, 360, 368, 409, 414, 432, 460, 540, 552, 621, 690, 720, 818, 828, 920, 1035, 1080, 1104, 1227, 1242, 1380, 1636, 1656, 1840, 2045, 2070, 2160, 2454, 2484, 2760, 3105, 3272, 3312, 3681, 4090, 4140, 4908, 4968, 5520, 6135, 6210, 6544, 7362, 8180, 8280, 9407, 9816, 9936, 11043, 12270, 12420, 14724, 16360, 16560, 18405, 18814, 19632, 22086, 24540, 24840, 28221, 29448, 32720, 36810, 37628, 44172, 47035, 49080, 49680, 55215, 56442, 58896, 73620, 75256, 84663, 88344, 94070, 98160, 110430, 112884, 141105, 147240, 150512, 169326, 176688, 188140, 220860, 225768, 253989, 282210, 294480, 338652, 376280, 423315, 441720, 451536, 507978, 564420, 677304, 752560, 846630, 883440, 1015956, 1128840, 1269945, 1354608, 1693260, 2031912, 2257680, 2539890, 3386520, 4063824, 5079780, 6773040, 10159560, 20319120]

約数ペア:

[(1, 20319120), (2, 10159560), (3, 6773040), (4, 5079780), (5, 4063824), (6, 3386520), (8, 2539890), (9, 2257680), (10, 2031912), (12, 1693260), (15, 1354608), (16, 1269945), (18, 1128840), (20, 1015956), (23, 883440), (24, 846630), (27, 752560), (30, 677304), (36, 564420), (40, 507978), (45, 451536), (46, 441720), (48, 423315), (54, 376280), (60, 338652), (69, 294480), (72, 282210), (80, 253989), (90, 225768), (92, 220860), (108, 188140), (115, 176688), (120, 169326), (135, 150512), (138, 147240), (144, 141105), (180, 112884), (184, 110430), (207, 98160), (216, 94070), (230, 88344), (240, 84663), (270, 75256), (276, 73620), (345, 58896), (360, 56442), (368, 55215), (409, 49680), (414, 49080), (432, 47035), (460, 44172), (540, 37628), (552, 36810), (621, 32720), (690, 29448), (720, 28221), (818, 24840), (828, 24540), (920, 22086), (1035, 19632), (1080, 18814), (1104, 18405), (1227, 16560), (1242, 16360), (1380, 14724), (1636, 12420), (1656, 12270), (1840, 11043), (2045, 9936), (2070, 9816), (2160, 9407), (2454, 8280), (2484, 8180), (2760, 7362), (3105, 6544), (3272, 6210), (3312, 6135), (3681, 5520), (4090, 4968), (4140, 4908)]