28155440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11353}}^1$

素因数の和:11397

約数の個数: 40

約数和(自身を含む): 67579008

約数和(自身を除く): 39423568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11353, 22706, 45412, 56765, 90824, 113530, 181648, 227060, 351943, 454120, 703886, 908240, 1407772, 1759715, 2815544, 3519430, 5631088, 7038860, 14077720, 28155440]

約数ペア:

[(1, 28155440), (2, 14077720), (4, 7038860), (5, 5631088), (8, 3519430), (10, 2815544), (16, 1759715), (20, 1407772), (31, 908240), (40, 703886), (62, 454120), (80, 351943), (124, 227060), (155, 181648), (248, 113530), (310, 90824), (496, 56765), (620, 45412), (1240, 22706), (2480, 11353)]