19912318328

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1\times {\mathrm{25679}}^1$

素因数の和:25980

約数の個数: 64

約数和(自身を含む): 43561497600

約数和(自身を除く): 23649179272

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 227, 244, 427, 454, 488, 854, 908, 1589, 1708, 1816, 3178, 3416, 6356, 12712, 13847, 25679, 27694, 51358, 55388, 96929, 102716, 110776, 179753, 193858, 205432, 359506, 387716, 719012, 775432, 1438024, 1566419, 3132838, 5829133, 6265676, 10964933, 11658266, 12531352, 21929866, 23316532, 40803931, 43859732, 46633064, 81607862, 87719464, 163215724, 326431448, 355577113, 711154226, 1422308452, 2489039791, 2844616904, 4978079582, 9956159164, 19912318328]

約数ペア:

[(1, 19912318328), (2, 9956159164), (4, 4978079582), (7, 2844616904), (8, 2489039791), (14, 1422308452), (28, 711154226), (56, 355577113), (61, 326431448), (122, 163215724), (227, 87719464), (244, 81607862), (427, 46633064), (454, 43859732), (488, 40803931), (854, 23316532), (908, 21929866), (1589, 12531352), (1708, 11658266), (1816, 10964933), (3178, 6265676), (3416, 5829133), (6356, 3132838), (12712, 1566419), (13847, 1438024), (25679, 775432), (27694, 719012), (51358, 387716), (55388, 359506), (96929, 205432), (102716, 193858), (110776, 179753)]