72780140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{4327}}^1$

素因数の和:4394

約数の個数: 36

約数和(自身を含む): 158326896

約数和(自身を除く): 85546756

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 841, 1682, 3364, 4205, 4327, 8410, 8654, 16820, 17308, 21635, 43270, 86540, 125483, 250966, 501932, 627415, 1254830, 2509660, 3639007, 7278014, 14556028, 18195035, 36390070, 72780140]

約数ペア:

[(1, 72780140), (2, 36390070), (4, 18195035), (5, 14556028), (10, 7278014), (20, 3639007), (29, 2509660), (58, 1254830), (116, 627415), (145, 501932), (290, 250966), (580, 125483), (841, 86540), (1682, 43270), (3364, 21635), (4205, 17308), (4327, 16820), (8410, 8654)]