248148920

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1\times {\mathrm{257}}^1$

素因数の和:608

約数の個数: 64

約数和(自身を含む): 568425600

約数和(自身を除く): 320276680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 239, 257, 404, 478, 505, 514, 808, 956, 1010, 1028, 1195, 1285, 1912, 2020, 2056, 2390, 2570, 4040, 4780, 5140, 9560, 10280, 24139, 25957, 48278, 51914, 61423, 96556, 103828, 120695, 122846, 129785, 193112, 207656, 241390, 245692, 259570, 307115, 482780, 491384, 519140, 614230, 965560, 1038280, 1228460, 2456920, 6203723, 12407446, 24814892, 31018615, 49629784, 62037230, 124074460, 248148920]

約数ペア:

[(1, 248148920), (2, 124074460), (4, 62037230), (5, 49629784), (8, 31018615), (10, 24814892), (20, 12407446), (40, 6203723), (101, 2456920), (202, 1228460), (239, 1038280), (257, 965560), (404, 614230), (478, 519140), (505, 491384), (514, 482780), (808, 307115), (956, 259570), (1010, 245692), (1028, 241390), (1195, 207656), (1285, 193112), (1912, 129785), (2020, 122846), (2056, 120695), (2390, 103828), (2570, 96556), (4040, 61423), (4780, 51914), (5140, 48278), (9560, 25957), (10280, 24139)]