64900280

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{4421}}^1$

素因数の和:4799

約数の個数: 32

約数和(自身を含む): 146456640

約数和(自身を除く): 81556360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1468, 1835, 2936, 3670, 4421, 7340, 8842, 14680, 17684, 22105, 35368, 44210, 88420, 176840, 1622507, 3245014, 6490028, 8112535, 12980056, 16225070, 32450140, 64900280]

約数ペア:

[(1, 64900280), (2, 32450140), (4, 16225070), (5, 12980056), (8, 8112535), (10, 6490028), (20, 3245014), (40, 1622507), (367, 176840), (734, 88420), (1468, 44210), (1835, 35368), (2936, 22105), (3670, 17684), (4421, 14680), (7340, 8842)]