215814820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{3307}}^1$

素因数の和:3580

約数の個数: 48

約数和(自身を含む): 490166208

約数和(自身を除く): 274351388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 251, 260, 502, 1004, 1255, 2510, 3263, 3307, 5020, 6526, 6614, 13052, 13228, 16315, 16535, 32630, 33070, 42991, 65260, 66140, 85982, 171964, 214955, 429910, 830057, 859820, 1660114, 3320228, 4150285, 8300570, 10790741, 16601140, 21581482, 43162964, 53953705, 107907410, 215814820]

約数ペア:

[(1, 215814820), (2, 107907410), (4, 53953705), (5, 43162964), (10, 21581482), (13, 16601140), (20, 10790741), (26, 8300570), (52, 4150285), (65, 3320228), (130, 1660114), (251, 859820), (260, 830057), (502, 429910), (1004, 214955), (1255, 171964), (2510, 85982), (3263, 66140), (3307, 65260), (5020, 42991), (6526, 33070), (6614, 32630), (13052, 16535), (13228, 16315)]