18379280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7411}}^1$

素因数の和:7455

約数の個数: 40

約数和(自身を含む): 44116224

約数和(自身を除く): 25736944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7411, 14822, 29644, 37055, 59288, 74110, 118576, 148220, 229741, 296440, 459482, 592880, 918964, 1148705, 1837928, 2297410, 3675856, 4594820, 9189640, 18379280]

約数ペア:

[(1, 18379280), (2, 9189640), (4, 4594820), (5, 3675856), (8, 2297410), (10, 1837928), (16, 1148705), (20, 918964), (31, 592880), (40, 459482), (62, 296440), (80, 229741), (124, 148220), (155, 118576), (248, 74110), (310, 59288), (496, 37055), (620, 29644), (1240, 14822), (2480, 7411)]