71379740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 153014400

約数和(自身を除く): 81634660

約数列:

[1, 2, 4, 5, 10, 20, 109, 137, 218, 239, 274, 436, 478, 545, 548, 685, 956, 1090, 1195, 1370, 2180, 2390, 2740, 4780, 14933, 26051, 29866, 32743, 52102, 59732, 65486, 74665, 104204, 130255, 130972, 149330, 163715, 260510, 298660, 327430, 521020, 654860, 3568987, 7137974, 14275948, 17844935, 35689870, 71379740]

約数ペア:

[(1, 71379740), (2, 35689870), (4, 17844935), (5, 14275948), (10, 7137974), (20, 3568987), (109, 654860), (137, 521020), (218, 327430), (239, 298660), (274, 260510), (436, 163715), (478, 149330), (545, 130972), (548, 130255), (685, 104204), (956, 74665), (1090, 65486), (1195, 59732), (1370, 52102), (2180, 32743), (2390, 29866), (2740, 26051), (4780, 14933)]