19997720148

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{377287}}^1$

素因数の和:377932

約数の個数: 48

約数和(自身を含む): 53411907584

約数和(自身を除く): 33414187436

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 631, 1262, 1893, 2524, 3786, 4417, 7572, 8834, 13251, 17668, 26502, 53004, 377287, 754574, 1131861, 1509148, 2263722, 2641009, 4527444, 5282018, 7923027, 10564036, 15846054, 31692108, 238068097, 476136194, 714204291, 952272388, 1428408582, 1666476679, 2856817164, 3332953358, 4999430037, 6665906716, 9998860074, 19997720148]

約数ペア:

[(1, 19997720148), (2, 9998860074), (3, 6665906716), (4, 4999430037), (6, 3332953358), (7, 2856817164), (12, 1666476679), (14, 1428408582), (21, 952272388), (28, 714204291), (42, 476136194), (84, 238068097), (631, 31692108), (1262, 15846054), (1893, 10564036), (2524, 7923027), (3786, 5282018), (4417, 4527444), (7572, 2641009), (8834, 2263722), (13251, 1509148), (17668, 1131861), (26502, 754574), (53004, 377287)]