21901980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:363

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 43416420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 59, 60, 69, 92, 115, 118, 138, 177, 230, 236, 269, 276, 295, 345, 354, 460, 538, 590, 690, 708, 807, 885, 1076, 1180, 1345, 1357, 1380, 1614, 1770, 2690, 2714, 3228, 3540, 4035, 4071, 5380, 5428, 6187, 6785, 8070, 8142, 12374, 13570, 15871, 16140, 16284, 18561, 20355, 24748, 27140, 30935, 31742, 37122, 40710, 47613, 61870, 63484, 74244, 79355, 81420, 92805, 95226, 123740, 158710, 185610, 190452, 238065, 317420, 365033, 371220, 476130, 730066, 952260, 1095099, 1460132, 1825165, 2190198, 3650330, 4380396, 5475495, 7300660, 10950990, 21901980]

約数ペア:

[(1, 21901980), (2, 10950990), (3, 7300660), (4, 5475495), (5, 4380396), (6, 3650330), (10, 2190198), (12, 1825165), (15, 1460132), (20, 1095099), (23, 952260), (30, 730066), (46, 476130), (59, 371220), (60, 365033), (69, 317420), (92, 238065), (115, 190452), (118, 185610), (138, 158710), (177, 123740), (230, 95226), (236, 92805), (269, 81420), (276, 79355), (295, 74244), (345, 63484), (354, 61870), (460, 47613), (538, 40710), (590, 37122), (690, 31742), (708, 30935), (807, 27140), (885, 24748), (1076, 20355), (1180, 18561), (1345, 16284), (1357, 16140), (1380, 15871), (1614, 13570), (1770, 12374), (2690, 8142), (2714, 8070), (3228, 6785), (3540, 6187), (4035, 5428), (4071, 5380)]