87495580

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 188606880

約数和(自身を除く): 101111300

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 197, 212, 265, 394, 419, 530, 788, 838, 985, 1060, 1676, 1970, 2095, 3940, 4190, 8380, 10441, 20882, 22207, 41764, 44414, 52205, 82543, 88828, 104410, 111035, 165086, 208820, 222070, 330172, 412715, 444140, 825430, 1650860, 4374779, 8749558, 17499116, 21873895, 43747790, 87495580]

約数ペア:

[(1, 87495580), (2, 43747790), (4, 21873895), (5, 17499116), (10, 8749558), (20, 4374779), (53, 1650860), (106, 825430), (197, 444140), (212, 412715), (265, 330172), (394, 222070), (419, 208820), (530, 165086), (788, 111035), (838, 104410), (985, 88828), (1060, 82543), (1676, 52205), (1970, 44414), (2095, 41764), (3940, 22207), (4190, 20882), (8380, 10441)]