20409090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1217}}^1$

素因数の和:1283

約数の個数: 64

約数和(自身を含む): 54020736

約数和(自身を除く): 33611646

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1217, 1290, 1677, 2434, 2795, 3354, 3651, 5590, 6085, 7302, 8385, 12170, 15821, 16770, 18255, 31642, 36510, 47463, 52331, 79105, 94926, 104662, 156993, 158210, 237315, 261655, 313986, 474630, 523310, 680303, 784965, 1360606, 1569930, 2040909, 3401515, 4081818, 6803030, 10204545, 20409090]

約数ペア:

[(1, 20409090), (2, 10204545), (3, 6803030), (5, 4081818), (6, 3401515), (10, 2040909), (13, 1569930), (15, 1360606), (26, 784965), (30, 680303), (39, 523310), (43, 474630), (65, 313986), (78, 261655), (86, 237315), (129, 158210), (130, 156993), (195, 104662), (215, 94926), (258, 79105), (390, 52331), (430, 47463), (559, 36510), (645, 31642), (1118, 18255), (1217, 16770), (1290, 15821), (1677, 12170), (2434, 8385), (2795, 7302), (3354, 6085), (3651, 5590)]