13151980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 29028384

約数和(自身を除く): 15876404

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 373, 410, 430, 746, 820, 860, 1492, 1763, 1865, 3526, 3730, 7052, 7460, 8815, 15293, 16039, 17630, 30586, 32078, 35260, 61172, 64156, 76465, 80195, 152930, 160390, 305860, 320780, 657599, 1315198, 2630396, 3287995, 6575990, 13151980]

約数ペア:

[(1, 13151980), (2, 6575990), (4, 3287995), (5, 2630396), (10, 1315198), (20, 657599), (41, 320780), (43, 305860), (82, 160390), (86, 152930), (164, 80195), (172, 76465), (205, 64156), (215, 61172), (373, 35260), (410, 32078), (430, 30586), (746, 17630), (820, 16039), (860, 15293), (1492, 8815), (1763, 7460), (1865, 7052), (3526, 3730)]