90771440

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6961}}^1$

素因数の和:7137

約数の個数: 40

約数和(自身を含む): 212368848

約数和(自身を除く): 121597408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6520, 6961, 13040, 13922, 27844, 34805, 55688, 69610, 111376, 139220, 278440, 556880, 1134643, 2269286, 4538572, 5673215, 9077144, 11346430, 18154288, 22692860, 45385720, 90771440]

約数ペア:

[(1, 90771440), (2, 45385720), (4, 22692860), (5, 18154288), (8, 11346430), (10, 9077144), (16, 5673215), (20, 4538572), (40, 2269286), (80, 1134643), (163, 556880), (326, 278440), (652, 139220), (815, 111376), (1304, 69610), (1630, 55688), (2608, 34805), (3260, 27844), (6520, 13922), (6961, 13040)]