18829840

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4441}}^1$

素因数の和:4507

約数の個数: 40

約数和(自身を含む): 44615448

約数和(自身を除く): 25785608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4441, 8882, 17764, 22205, 35528, 44410, 71056, 88820, 177640, 235373, 355280, 470746, 941492, 1176865, 1882984, 2353730, 3765968, 4707460, 9414920, 18829840]

約数ペア:

[(1, 18829840), (2, 9414920), (4, 4707460), (5, 3765968), (8, 2353730), (10, 1882984), (16, 1176865), (20, 941492), (40, 470746), (53, 355280), (80, 235373), (106, 177640), (212, 88820), (265, 71056), (424, 44410), (530, 35528), (848, 22205), (1060, 17764), (2120, 8882), (4240, 4441)]