20002688

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{71}}^2$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 41722080

約数和(自身を除く): 21719392

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 71, 124, 128, 142, 248, 284, 496, 568, 992, 1136, 1984, 2201, 2272, 3968, 4402, 4544, 5041, 8804, 9088, 10082, 17608, 20164, 35216, 40328, 70432, 80656, 140864, 156271, 161312, 281728, 312542, 322624, 625084, 645248, 1250168, 2500336, 5000672, 10001344, 20002688]

約数ペア:

[(1, 20002688), (2, 10001344), (4, 5000672), (8, 2500336), (16, 1250168), (31, 645248), (32, 625084), (62, 322624), (64, 312542), (71, 281728), (124, 161312), (128, 156271), (142, 140864), (248, 80656), (284, 70432), (496, 40328), (568, 35216), (992, 20164), (1136, 17608), (1984, 10082), (2201, 9088), (2272, 8804), (3968, 5041), (4402, 4544)]