18180880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7331}}^1$

素因数の和:7375

約数の個数: 40

約数和(自身を含む): 43640064

約数和(自身を除く): 25459184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7331, 14662, 29324, 36655, 58648, 73310, 117296, 146620, 227261, 293240, 454522, 586480, 909044, 1136305, 1818088, 2272610, 3636176, 4545220, 9090440, 18180880]

約数ペア:

[(1, 18180880), (2, 9090440), (4, 4545220), (5, 3636176), (8, 2272610), (10, 1818088), (16, 1136305), (20, 909044), (31, 586480), (40, 454522), (62, 293240), (80, 227261), (124, 146620), (155, 117296), (248, 73310), (310, 58648), (496, 36655), (620, 29324), (1240, 14662), (2480, 7331)]