20847872

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 44739072

約数和(自身を除く): 23891200

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 64, 71, 74, 124, 128, 142, 148, 248, 256, 284, 296, 496, 568, 592, 992, 1136, 1147, 1184, 1984, 2201, 2272, 2294, 2368, 2627, 3968, 4402, 4544, 4588, 4736, 5254, 7936, 8804, 9088, 9176, 9472, 10508, 17608, 18176, 18352, 21016, 35216, 36704, 42032, 70432, 73408, 81437, 84064, 140864, 146816, 162874, 168128, 281728, 293632, 325748, 336256, 563456, 651496, 672512, 1302992, 2605984, 5211968, 10423936, 20847872]

約数ペア:

[(1, 20847872), (2, 10423936), (4, 5211968), (8, 2605984), (16, 1302992), (31, 672512), (32, 651496), (37, 563456), (62, 336256), (64, 325748), (71, 293632), (74, 281728), (124, 168128), (128, 162874), (142, 146816), (148, 140864), (248, 84064), (256, 81437), (284, 73408), (296, 70432), (496, 42032), (568, 36704), (592, 35216), (992, 21016), (1136, 18352), (1147, 18176), (1184, 17608), (1984, 10508), (2201, 9472), (2272, 9176), (2294, 9088), (2368, 8804), (2627, 7936), (3968, 5254), (4402, 4736), (4544, 4588)]