1279342220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^2$

素因数の和:631

約数の個数: 72

約数和(自身を含む): 2947340592

約数和(自身を除く): 1667998372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 271, 335, 542, 670, 871, 1084, 1340, 1355, 1742, 2710, 3484, 3523, 4355, 5420, 7046, 8710, 14092, 17420, 17615, 18157, 35230, 36314, 70460, 72628, 73441, 90785, 146882, 181570, 236041, 293764, 363140, 367205, 472082, 734410, 944164, 954733, 1180205, 1468820, 1909466, 2360410, 3818932, 4720820, 4773665, 4920547, 9547330, 9841094, 19094660, 19682188, 24602735, 49205470, 63967111, 98410940, 127934222, 255868444, 319835555, 639671110, 1279342220]

約数ペア:

[(1, 1279342220), (2, 639671110), (4, 319835555), (5, 255868444), (10, 127934222), (13, 98410940), (20, 63967111), (26, 49205470), (52, 24602735), (65, 19682188), (67, 19094660), (130, 9841094), (134, 9547330), (260, 4920547), (268, 4773665), (271, 4720820), (335, 3818932), (542, 2360410), (670, 1909466), (871, 1468820), (1084, 1180205), (1340, 954733), (1355, 944164), (1742, 734410), (2710, 472082), (3484, 367205), (3523, 363140), (4355, 293764), (5420, 236041), (7046, 181570), (8710, 146882), (14092, 90785), (17420, 73441), (17615, 72628), (18157, 70460), (35230, 36314)]