1640643837

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1\times {\mathrm{7103}}^1$

素因数の和:7777

約数の個数: 32

約数和(自身を含む): 2651553792

約数和(自身を除く): 1010909955

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 647, 1941, 4529, 7103, 10999, 13587, 21309, 32997, 49721, 76993, 120751, 149163, 230979, 362253, 845257, 2535771, 4595641, 13786923, 32169487, 78125897, 96508461, 234377691, 546881279, 1640643837]

約数ペア:

[(1, 1640643837), (3, 546881279), (7, 234377691), (17, 96508461), (21, 78125897), (51, 32169487), (119, 13786923), (357, 4595641), (647, 2535771), (1941, 845257), (4529, 362253), (7103, 230979), (10999, 149163), (13587, 120751), (21309, 76993), (32997, 49721)]