20120402720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{19609}}^1$

素因数の和:19699

約数の個数: 144

約数和(自身を含む): 53237149560

約数和(自身を除く): 33116746840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 53, 55, 80, 88, 106, 110, 121, 160, 176, 212, 220, 242, 265, 352, 424, 440, 484, 530, 583, 605, 848, 880, 968, 1060, 1166, 1210, 1696, 1760, 1936, 2120, 2332, 2420, 2915, 3872, 4240, 4664, 4840, 5830, 6413, 8480, 9328, 9680, 11660, 12826, 18656, 19360, 19609, 23320, 25652, 32065, 39218, 46640, 51304, 64130, 78436, 93280, 98045, 102608, 128260, 156872, 196090, 205216, 215699, 256520, 313744, 392180, 431398, 513040, 627488, 784360, 862796, 1026080, 1039277, 1078495, 1568720, 1725592, 2078554, 2156990, 2372689, 3137440, 3451184, 4157108, 4313980, 4745378, 5196385, 6902368, 8314216, 8627960, 9490756, 10392770, 11432047, 11863445, 16628432, 17255920, 18981512, 20785540, 22864094, 23726890, 33256864, 34511840, 37963024, 41571080, 45728188, 47453780, 57160235, 75926048, 83142160, 91456376, 94907560, 114320470, 125752517, 166284320, 182912752, 189815120, 228640940, 251505034, 365825504, 379630240, 457281880, 503010068, 628762585, 914563760, 1006020136, 1257525170, 1829127520, 2012040272, 2515050340, 4024080544, 5030100680, 10060201360, 20120402720]

約数ペア:

[(1, 20120402720), (2, 10060201360), (4, 5030100680), (5, 4024080544), (8, 2515050340), (10, 2012040272), (11, 1829127520), (16, 1257525170), (20, 1006020136), (22, 914563760), (32, 628762585), (40, 503010068), (44, 457281880), (53, 379630240), (55, 365825504), (80, 251505034), (88, 228640940), (106, 189815120), (110, 182912752), (121, 166284320), (160, 125752517), (176, 114320470), (212, 94907560), (220, 91456376), (242, 83142160), (265, 75926048), (352, 57160235), (424, 47453780), (440, 45728188), (484, 41571080), (530, 37963024), (583, 34511840), (605, 33256864), (848, 23726890), (880, 22864094), (968, 20785540), (1060, 18981512), (1166, 17255920), (1210, 16628432), (1696, 11863445), (1760, 11432047), (1936, 10392770), (2120, 9490756), (2332, 8627960), (2420, 8314216), (2915, 6902368), (3872, 5196385), (4240, 4745378), (4664, 4313980), (4840, 4157108), (5830, 3451184), (6413, 3137440), (8480, 2372689), (9328, 2156990), (9680, 2078554), (11660, 1725592), (12826, 1568720), (18656, 1078495), (19360, 1039277), (19609, 1026080), (23320, 862796), (25652, 784360), (32065, 627488), (39218, 513040), (46640, 431398), (51304, 392180), (64130, 313744), (78436, 256520), (93280, 215699), (98045, 205216), (102608, 196090), (128260, 156872)]