18240440

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^2\times {\mathrm{131}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 42067080

約数和(自身を除く): 23826640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 131, 236, 262, 295, 472, 524, 590, 655, 1048, 1180, 1310, 2360, 2620, 3481, 5240, 6962, 7729, 13924, 15458, 17405, 27848, 30916, 34810, 38645, 61832, 69620, 77290, 139240, 154580, 309160, 456011, 912022, 1824044, 2280055, 3648088, 4560110, 9120220, 18240440]

約数ペア:

[(1, 18240440), (2, 9120220), (4, 4560110), (5, 3648088), (8, 2280055), (10, 1824044), (20, 912022), (40, 456011), (59, 309160), (118, 154580), (131, 139240), (236, 77290), (262, 69620), (295, 61832), (472, 38645), (524, 34810), (590, 30916), (655, 27848), (1048, 17405), (1180, 15458), (1310, 13924), (2360, 7729), (2620, 6962), (3481, 5240)]