20239280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8161}}^1$

素因数の和:8205

約数の個数: 40

約数和(自身を含む): 48580224

約数和(自身を除く): 28340944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8161, 16322, 32644, 40805, 65288, 81610, 130576, 163220, 252991, 326440, 505982, 652880, 1011964, 1264955, 2023928, 2529910, 4047856, 5059820, 10119640, 20239280]

約数ペア:

[(1, 20239280), (2, 10119640), (4, 5059820), (5, 4047856), (8, 2529910), (10, 2023928), (16, 1264955), (20, 1011964), (31, 652880), (40, 505982), (62, 326440), (80, 252991), (124, 163220), (155, 130576), (248, 81610), (310, 65288), (496, 40805), (620, 32644), (1240, 16322), (2480, 8161)]