64816900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{15809}}^1$

素因数の和:15864

約数の個数: 36

約数和(自身を含む): 144092340

約数和(自身を除く): 79275440

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 15809, 31618, 63236, 79045, 158090, 316180, 395225, 648169, 790450, 1296338, 1580900, 2592676, 3240845, 6481690, 12963380, 16204225, 32408450, 64816900]

約数ペア:

[(1, 64816900), (2, 32408450), (4, 16204225), (5, 12963380), (10, 6481690), (20, 3240845), (25, 2592676), (41, 1580900), (50, 1296338), (82, 790450), (100, 648169), (164, 395225), (205, 316180), (410, 158090), (820, 79045), (1025, 63236), (2050, 31618), (4100, 15809)]