18807580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1613}}^1$

素因数の和:1686

約数の個数: 48

約数和(自身を含む): 43926624

約数和(自身を除く): 25119044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1613, 2332, 2915, 3226, 5830, 6452, 8065, 11660, 16130, 17743, 32260, 35486, 70972, 85489, 88715, 170978, 177430, 341956, 354860, 427445, 854890, 940379, 1709780, 1880758, 3761516, 4701895, 9403790, 18807580]

約数ペア:

[(1, 18807580), (2, 9403790), (4, 4701895), (5, 3761516), (10, 1880758), (11, 1709780), (20, 940379), (22, 854890), (44, 427445), (53, 354860), (55, 341956), (106, 177430), (110, 170978), (212, 88715), (220, 85489), (265, 70972), (530, 35486), (583, 32260), (1060, 17743), (1166, 16130), (1613, 11660), (2332, 8065), (2915, 6452), (3226, 5830)]