28254640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11393}}^1$

素因数の和:11437

約数の個数: 40

約数和(自身を含む): 67817088

約数和(自身を除く): 39562448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11393, 22786, 45572, 56965, 91144, 113930, 182288, 227860, 353183, 455720, 706366, 911440, 1412732, 1765915, 2825464, 3531830, 5650928, 7063660, 14127320, 28254640]

約数ペア:

[(1, 28254640), (2, 14127320), (4, 7063660), (5, 5650928), (8, 3531830), (10, 2825464), (16, 1765915), (20, 1412732), (31, 911440), (40, 706366), (62, 455720), (80, 353183), (124, 227860), (155, 182288), (248, 113930), (310, 91144), (496, 56965), (620, 45572), (1240, 22786), (2480, 11393)]