13781360

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5557}}^1$

素因数の和:5601

約数の個数: 40

約数和(自身を含む): 33081216

約数和(自身を除く): 19299856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 5557, 11114, 22228, 27785, 44456, 55570, 88912, 111140, 172267, 222280, 344534, 444560, 689068, 861335, 1378136, 1722670, 2756272, 3445340, 6890680, 13781360]

約数ペア:

[(1, 13781360), (2, 6890680), (4, 3445340), (5, 2756272), (8, 1722670), (10, 1378136), (16, 861335), (20, 689068), (31, 444560), (40, 344534), (62, 222280), (80, 172267), (124, 111140), (155, 88912), (248, 55570), (310, 44456), (496, 27785), (620, 22228), (1240, 11114), (2480, 5557)]