205656820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{14753}}^1$

素因数の和:14820

約数の個数: 48

約数和(自身を含む): 468469008

約数和(自身を除く): 262812188

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 2788, 3485, 6970, 13940, 14753, 29506, 59012, 73765, 147530, 250801, 295060, 501602, 604873, 1003204, 1209746, 1254005, 2419492, 2508010, 3024365, 5016020, 6048730, 10282841, 12097460, 20565682, 41131364, 51414205, 102828410, 205656820]

約数ペア:

[(1, 205656820), (2, 102828410), (4, 51414205), (5, 41131364), (10, 20565682), (17, 12097460), (20, 10282841), (34, 6048730), (41, 5016020), (68, 3024365), (82, 2508010), (85, 2419492), (164, 1254005), (170, 1209746), (205, 1003204), (340, 604873), (410, 501602), (697, 295060), (820, 250801), (1394, 147530), (2788, 73765), (3485, 59012), (6970, 29506), (13940, 14753)]