20115280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8111}}^1$

素因数の和:8155

約数の個数: 40

約数和(自身を含む): 48282624

約数和(自身を除く): 28167344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8111, 16222, 32444, 40555, 64888, 81110, 129776, 162220, 251441, 324440, 502882, 648880, 1005764, 1257205, 2011528, 2514410, 4023056, 5028820, 10057640, 20115280]

約数ペア:

[(1, 20115280), (2, 10057640), (4, 5028820), (5, 4023056), (8, 2514410), (10, 2011528), (16, 1257205), (20, 1005764), (31, 648880), (40, 502882), (62, 324440), (80, 251441), (124, 162220), (155, 129776), (248, 81110), (310, 64888), (496, 40555), (620, 32444), (1240, 16222), (2480, 8111)]