7781540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^2$

素因数の和:368

約数の個数: 36

約数和(自身を含む): 17700564

約数和(自身を除く): 9919024

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 173, 260, 346, 692, 865, 1730, 2249, 3460, 4498, 8996, 11245, 22490, 29929, 44980, 59858, 119716, 149645, 299290, 389077, 598580, 778154, 1556308, 1945385, 3890770, 7781540]

約数ペア:

[(1, 7781540), (2, 3890770), (4, 1945385), (5, 1556308), (10, 778154), (13, 598580), (20, 389077), (26, 299290), (52, 149645), (65, 119716), (130, 59858), (173, 44980), (260, 29929), (346, 22490), (692, 11245), (865, 8996), (1730, 4498), (2249, 3460)]