66854720

素因数分解:

$2^6\times 5^1\times {\mathrm{401}}^1\times {\mathrm{521}}^1$

素因数の和:939

約数の個数: 56

約数和(自身を含む): 159901128

約数和(自身を除く): 93046408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 401, 521, 802, 1042, 1604, 2005, 2084, 2605, 3208, 4010, 4168, 5210, 6416, 8020, 8336, 10420, 12832, 16040, 16672, 20840, 25664, 32080, 33344, 41680, 64160, 83360, 128320, 166720, 208921, 417842, 835684, 1044605, 1671368, 2089210, 3342736, 4178420, 6685472, 8356840, 13370944, 16713680, 33427360, 66854720]

約数ペア:

[(1, 66854720), (2, 33427360), (4, 16713680), (5, 13370944), (8, 8356840), (10, 6685472), (16, 4178420), (20, 3342736), (32, 2089210), (40, 1671368), (64, 1044605), (80, 835684), (160, 417842), (320, 208921), (401, 166720), (521, 128320), (802, 83360), (1042, 64160), (1604, 41680), (2005, 33344), (2084, 32080), (2605, 25664), (3208, 20840), (4010, 16672), (4168, 16040), (5210, 12832), (6416, 10420), (8020, 8336)]