318208640

素因数分解:

$2^7\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1181}}^1$

素因数の和:1621

約数の個数: 64

約数和(自身を含む): 763170120

約数和(自身を除く): 444961480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 421, 640, 842, 1181, 1684, 2105, 2362, 3368, 4210, 4724, 5905, 6736, 8420, 9448, 11810, 13472, 16840, 18896, 23620, 26944, 33680, 37792, 47240, 53888, 67360, 75584, 94480, 134720, 151168, 188960, 269440, 377920, 497201, 755840, 994402, 1988804, 2486005, 3977608, 4972010, 7955216, 9944020, 15910432, 19888040, 31820864, 39776080, 63641728, 79552160, 159104320, 318208640]

約数ペア:

[(1, 318208640), (2, 159104320), (4, 79552160), (5, 63641728), (8, 39776080), (10, 31820864), (16, 19888040), (20, 15910432), (32, 9944020), (40, 7955216), (64, 4972010), (80, 3977608), (128, 2486005), (160, 1988804), (320, 994402), (421, 755840), (640, 497201), (842, 377920), (1181, 269440), (1684, 188960), (2105, 151168), (2362, 134720), (3368, 94480), (4210, 75584), (4724, 67360), (5905, 53888), (6736, 47240), (8420, 37792), (9448, 33680), (11810, 26944), (13472, 23620), (16840, 18896)]