72181240

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4019}}^1$

素因数の和:4479

約数の個数: 32

約数和(自身を含む): 162810000

約数和(自身を除く): 90628760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4019, 4490, 8038, 8980, 16076, 17960, 20095, 32152, 40190, 80380, 160760, 1804531, 3609062, 7218124, 9022655, 14436248, 18045310, 36090620, 72181240]

約数ペア:

[(1, 72181240), (2, 36090620), (4, 18045310), (5, 14436248), (8, 9022655), (10, 7218124), (20, 3609062), (40, 1804531), (449, 160760), (898, 80380), (1796, 40190), (2245, 32152), (3592, 20095), (4019, 17960), (4490, 16076), (8038, 8980)]