251469560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{809}}^1$

素因数の和:1248

約数の個数: 64

約数和(自身を含む): 597780000

約数和(自身を除く): 346310440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 409, 760, 809, 818, 1618, 1636, 2045, 3236, 3272, 4045, 4090, 6472, 7771, 8090, 8180, 15371, 15542, 16180, 16360, 30742, 31084, 32360, 38855, 61484, 62168, 76855, 77710, 122968, 153710, 155420, 307420, 310840, 330881, 614840, 661762, 1323524, 1654405, 2647048, 3308810, 6286739, 6617620, 12573478, 13235240, 25146956, 31433695, 50293912, 62867390, 125734780, 251469560]

約数ペア:

[(1, 251469560), (2, 125734780), (4, 62867390), (5, 50293912), (8, 31433695), (10, 25146956), (19, 13235240), (20, 12573478), (38, 6617620), (40, 6286739), (76, 3308810), (95, 2647048), (152, 1654405), (190, 1323524), (380, 661762), (409, 614840), (760, 330881), (809, 310840), (818, 307420), (1618, 155420), (1636, 153710), (2045, 122968), (3236, 77710), (3272, 76855), (4045, 62168), (4090, 61484), (6472, 38855), (7771, 32360), (8090, 31084), (8180, 30742), (15371, 16360), (15542, 16180)]