19618664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 41912640

約数和(自身を除く): 22293976

約数列:

[1, 2, 4, 8, 13, 26, 41, 43, 52, 82, 86, 104, 107, 164, 172, 214, 328, 344, 428, 533, 559, 856, 1066, 1118, 1391, 1763, 2132, 2236, 2782, 3526, 4264, 4387, 4472, 4601, 5564, 7052, 8774, 9202, 11128, 14104, 17548, 18404, 22919, 35096, 36808, 45838, 57031, 59813, 91676, 114062, 119626, 183352, 188641, 228124, 239252, 377282, 456248, 478504, 754564, 1509128, 2452333, 4904666, 9809332, 19618664]

約数ペア:

[(1, 19618664), (2, 9809332), (4, 4904666), (8, 2452333), (13, 1509128), (26, 754564), (41, 478504), (43, 456248), (52, 377282), (82, 239252), (86, 228124), (104, 188641), (107, 183352), (164, 119626), (172, 114062), (214, 91676), (328, 59813), (344, 57031), (428, 45838), (533, 36808), (559, 35096), (856, 22919), (1066, 18404), (1118, 17548), (1391, 14104), (1763, 11128), (2132, 9202), (2236, 8774), (2782, 7052), (3526, 5564), (4264, 4601), (4387, 4472)]