20104875

素因数分解:

$3^3\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:91

約数の個数: 128

約数和(自身を含む): 45527040

約数和(自身を除く): 25422165

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 25, 27, 35, 37, 45, 63, 69, 75, 105, 111, 115, 125, 135, 161, 175, 185, 189, 207, 225, 259, 315, 333, 345, 375, 483, 525, 555, 575, 621, 675, 777, 805, 851, 875, 925, 945, 999, 1035, 1125, 1295, 1449, 1575, 1665, 1725, 2331, 2415, 2553, 2625, 2775, 2875, 3105, 3375, 3885, 4025, 4255, 4347, 4625, 4725, 4995, 5175, 5957, 6475, 6993, 7245, 7659, 7875, 8325, 8625, 11655, 12075, 12765, 13875, 15525, 17871, 19425, 20125, 21275, 21735, 22977, 23625, 24975, 25875, 29785, 32375, 34965, 36225, 38295, 41625, 53613, 58275, 60375, 63825, 77625, 89355, 97125, 106375, 108675, 114885, 124875, 148925, 160839, 174825, 181125, 191475, 268065, 291375, 319125, 446775, 543375, 574425, 744625, 804195, 874125, 957375, 1340325, 2233875, 2872125, 4020975, 6701625, 20104875]

約数ペア:

[(1, 20104875), (3, 6701625), (5, 4020975), (7, 2872125), (9, 2233875), (15, 1340325), (21, 957375), (23, 874125), (25, 804195), (27, 744625), (35, 574425), (37, 543375), (45, 446775), (63, 319125), (69, 291375), (75, 268065), (105, 191475), (111, 181125), (115, 174825), (125, 160839), (135, 148925), (161, 124875), (175, 114885), (185, 108675), (189, 106375), (207, 97125), (225, 89355), (259, 77625), (315, 63825), (333, 60375), (345, 58275), (375, 53613), (483, 41625), (525, 38295), (555, 36225), (575, 34965), (621, 32375), (675, 29785), (777, 25875), (805, 24975), (851, 23625), (875, 22977), (925, 21735), (945, 21275), (999, 20125), (1035, 19425), (1125, 17871), (1295, 15525), (1449, 13875), (1575, 12765), (1665, 12075), (1725, 11655), (2331, 8625), (2415, 8325), (2553, 7875), (2625, 7659), (2775, 7245), (2875, 6993), (3105, 6475), (3375, 5957), (3885, 5175), (4025, 4995), (4255, 4725), (4347, 4625)]