25016380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 54786816

約数和(自身を除く): 29770436

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 257, 310, 314, 514, 620, 628, 785, 1028, 1285, 1570, 2570, 3140, 4867, 5140, 7967, 9734, 15934, 19468, 24335, 31868, 39835, 40349, 48670, 79670, 80698, 97340, 159340, 161396, 201745, 403490, 806980, 1250819, 2501638, 5003276, 6254095, 12508190, 25016380]

約数ペア:

[(1, 25016380), (2, 12508190), (4, 6254095), (5, 5003276), (10, 2501638), (20, 1250819), (31, 806980), (62, 403490), (124, 201745), (155, 161396), (157, 159340), (257, 97340), (310, 80698), (314, 79670), (514, 48670), (620, 40349), (628, 39835), (785, 31868), (1028, 24335), (1285, 19468), (1570, 15934), (2570, 9734), (3140, 7967), (4867, 5140)]