18681780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:625

約数の個数: 96

約数和(自身を含む): 57746304

約数和(自身を除く): 39064524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 557, 559, 645, 780, 860, 1114, 1118, 1290, 1671, 1677, 2228, 2236, 2580, 2785, 2795, 3342, 3354, 5570, 5590, 6684, 6708, 7241, 8355, 8385, 11140, 11180, 14482, 16710, 16770, 21723, 23951, 28964, 33420, 33540, 36205, 43446, 47902, 71853, 72410, 86892, 95804, 108615, 119755, 143706, 144820, 217230, 239510, 287412, 311363, 359265, 434460, 479020, 622726, 718530, 934089, 1245452, 1437060, 1556815, 1868178, 3113630, 3736356, 4670445, 6227260, 9340890, 18681780]

約数ペア:

[(1, 18681780), (2, 9340890), (3, 6227260), (4, 4670445), (5, 3736356), (6, 3113630), (10, 1868178), (12, 1556815), (13, 1437060), (15, 1245452), (20, 934089), (26, 718530), (30, 622726), (39, 479020), (43, 434460), (52, 359265), (60, 311363), (65, 287412), (78, 239510), (86, 217230), (129, 144820), (130, 143706), (156, 119755), (172, 108615), (195, 95804), (215, 86892), (258, 72410), (260, 71853), (390, 47902), (430, 43446), (516, 36205), (557, 33540), (559, 33420), (645, 28964), (780, 23951), (860, 21723), (1114, 16770), (1118, 16710), (1290, 14482), (1671, 11180), (1677, 11140), (2228, 8385), (2236, 8355), (2580, 7241), (2785, 6708), (2795, 6684), (3342, 5590), (3354, 5570)]