17785820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1021}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 40863648

約数和(自身を除く): 23077828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1021, 1340, 1742, 2042, 3484, 4084, 4355, 5105, 8710, 10210, 13273, 17420, 20420, 26546, 53092, 66365, 68407, 132730, 136814, 265460, 273628, 342035, 684070, 889291, 1368140, 1778582, 3557164, 4446455, 8892910, 17785820]

約数ペア:

[(1, 17785820), (2, 8892910), (4, 4446455), (5, 3557164), (10, 1778582), (13, 1368140), (20, 889291), (26, 684070), (52, 342035), (65, 273628), (67, 265460), (130, 136814), (134, 132730), (260, 68407), (268, 66365), (335, 53092), (670, 26546), (871, 20420), (1021, 17420), (1340, 13273), (1742, 10210), (2042, 8710), (3484, 5105), (4084, 4355)]