72440680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139309}}^1$

素因数の和:139333

約数の個数: 32

約数和(自身を含む): 175530600

約数和(自身を除く): 103089920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 139309, 278618, 557236, 696545, 1114472, 1393090, 1811017, 2786180, 3622034, 5572360, 7244068, 9055085, 14488136, 18110170, 36220340, 72440680]

約数ペア:

[(1, 72440680), (2, 36220340), (4, 18110170), (5, 14488136), (8, 9055085), (10, 7244068), (13, 5572360), (20, 3622034), (26, 2786180), (40, 1811017), (52, 1393090), (65, 1114472), (104, 696545), (130, 557236), (260, 278618), (520, 139309)]