15916180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 39501000

約数和(自身を除く): 23584820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 149, 196, 218, 245, 298, 436, 490, 545, 596, 745, 763, 980, 1043, 1090, 1490, 1526, 2086, 2180, 2980, 3052, 3815, 4172, 5215, 5341, 7301, 7630, 10430, 10682, 14602, 15260, 16241, 20860, 21364, 26705, 29204, 32482, 36505, 53410, 64964, 73010, 81205, 106820, 113687, 146020, 162410, 227374, 324820, 454748, 568435, 795809, 1136870, 1591618, 2273740, 3183236, 3979045, 7958090, 15916180]

約数ペア:

[(1, 15916180), (2, 7958090), (4, 3979045), (5, 3183236), (7, 2273740), (10, 1591618), (14, 1136870), (20, 795809), (28, 568435), (35, 454748), (49, 324820), (70, 227374), (98, 162410), (109, 146020), (140, 113687), (149, 106820), (196, 81205), (218, 73010), (245, 64964), (298, 53410), (436, 36505), (490, 32482), (545, 29204), (596, 26705), (745, 21364), (763, 20860), (980, 16241), (1043, 15260), (1090, 14602), (1490, 10682), (1526, 10430), (2086, 7630), (2180, 7301), (2980, 5341), (3052, 5215), (3815, 4172)]