220375280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{88861}}^1$

素因数の和:88905

約数の個数: 40

約数和(自身を含む): 528906624

約数和(自身を除く): 308531344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 88861, 177722, 355444, 444305, 710888, 888610, 1421776, 1777220, 2754691, 3554440, 5509382, 7108880, 11018764, 13773455, 22037528, 27546910, 44075056, 55093820, 110187640, 220375280]

約数ペア:

[(1, 220375280), (2, 110187640), (4, 55093820), (5, 44075056), (8, 27546910), (10, 22037528), (16, 13773455), (20, 11018764), (31, 7108880), (40, 5509382), (62, 3554440), (80, 2754691), (124, 1777220), (155, 1421776), (248, 888610), (310, 710888), (496, 444305), (620, 355444), (1240, 177722), (2480, 88861)]