20210658

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25754142

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 47, 74, 78, 94, 111, 141, 149, 222, 282, 298, 447, 481, 611, 894, 962, 1222, 1443, 1739, 1833, 1937, 2886, 3478, 3666, 3874, 5217, 5513, 5811, 7003, 10434, 11026, 11622, 14006, 16539, 21009, 22607, 33078, 42018, 45214, 67821, 71669, 91039, 135642, 143338, 182078, 215007, 259111, 273117, 430014, 518222, 546234, 777333, 1554666, 3368443, 6736886, 10105329, 20210658]

約数ペア:

[(1, 20210658), (2, 10105329), (3, 6736886), (6, 3368443), (13, 1554666), (26, 777333), (37, 546234), (39, 518222), (47, 430014), (74, 273117), (78, 259111), (94, 215007), (111, 182078), (141, 143338), (149, 135642), (222, 91039), (282, 71669), (298, 67821), (447, 45214), (481, 42018), (611, 33078), (894, 22607), (962, 21009), (1222, 16539), (1443, 14006), (1739, 11622), (1833, 11026), (1937, 10434), (2886, 7003), (3478, 5811), (3666, 5513), (3874, 5217)]