644343460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{15647}}^1$

素因数の和:15756

約数の個数: 48

約数和(自身を含む): 1419586560

約数和(自身を除く): 775243100

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 580, 710, 1420, 2059, 4118, 8236, 10295, 15647, 20590, 31294, 41180, 62588, 78235, 156470, 312940, 453763, 907526, 1110937, 1815052, 2221874, 2268815, 4443748, 4537630, 5554685, 9075260, 11109370, 22218740, 32217173, 64434346, 128868692, 161085865, 322171730, 644343460]

約数ペア:

[(1, 644343460), (2, 322171730), (4, 161085865), (5, 128868692), (10, 64434346), (20, 32217173), (29, 22218740), (58, 11109370), (71, 9075260), (116, 5554685), (142, 4537630), (145, 4443748), (284, 2268815), (290, 2221874), (355, 1815052), (580, 1110937), (710, 907526), (1420, 453763), (2059, 312940), (4118, 156470), (8236, 78235), (10295, 62588), (15647, 41180), (20590, 31294)]