280470640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113093}}^1$

素因数の和:113137

約数の個数: 40

約数和(自身を含む): 673135488

約数和(自身を除く): 392664848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 113093, 226186, 452372, 565465, 904744, 1130930, 1809488, 2261860, 3505883, 4523720, 7011766, 9047440, 14023532, 17529415, 28047064, 35058830, 56094128, 70117660, 140235320, 280470640]

約数ペア:

[(1, 280470640), (2, 140235320), (4, 70117660), (5, 56094128), (8, 35058830), (10, 28047064), (16, 17529415), (20, 14023532), (31, 9047440), (40, 7011766), (62, 4523720), (80, 3505883), (124, 2261860), (155, 1809488), (248, 1130930), (310, 904744), (496, 565465), (620, 452372), (1240, 226186), (2480, 113093)]