20123264

素因数分解:

$2^7\times 7^1\times {\mathrm{37}}^1\times {\mathrm{607}}^1$

素因数の和:665

約数の個数: 64

約数和(自身を含む): 47132160

約数和(自身を除く): 27008896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 128, 148, 224, 259, 296, 448, 518, 592, 607, 896, 1036, 1184, 1214, 2072, 2368, 2428, 4144, 4249, 4736, 4856, 8288, 8498, 9712, 16576, 16996, 19424, 22459, 33152, 33992, 38848, 44918, 67984, 77696, 89836, 135968, 157213, 179672, 271936, 314426, 359344, 543872, 628852, 718688, 1257704, 1437376, 2515408, 2874752, 5030816, 10061632, 20123264]

約数ペア:

[(1, 20123264), (2, 10061632), (4, 5030816), (7, 2874752), (8, 2515408), (14, 1437376), (16, 1257704), (28, 718688), (32, 628852), (37, 543872), (56, 359344), (64, 314426), (74, 271936), (112, 179672), (128, 157213), (148, 135968), (224, 89836), (259, 77696), (296, 67984), (448, 44918), (518, 38848), (592, 33992), (607, 33152), (896, 22459), (1036, 19424), (1184, 16996), (1214, 16576), (2072, 9712), (2368, 8498), (2428, 8288), (4144, 4856), (4249, 4736)]