78348980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1\times {\mathrm{443}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 170069760

約数和(自身を除く): 91720780

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 239, 370, 443, 478, 740, 886, 956, 1195, 1772, 2215, 2390, 4430, 4780, 8843, 8860, 16391, 17686, 32782, 35372, 44215, 65564, 81955, 88430, 105877, 163910, 176860, 211754, 327820, 423508, 529385, 1058770, 2117540, 3917449, 7834898, 15669796, 19587245, 39174490, 78348980]

約数ペア:

[(1, 78348980), (2, 39174490), (4, 19587245), (5, 15669796), (10, 7834898), (20, 3917449), (37, 2117540), (74, 1058770), (148, 529385), (185, 423508), (239, 327820), (370, 211754), (443, 176860), (478, 163910), (740, 105877), (886, 88430), (956, 81955), (1195, 65564), (1772, 44215), (2215, 35372), (2390, 32782), (4430, 17686), (4780, 16391), (8843, 8860)]