18507996

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:651

約数の個数: 72

約数和(自身を含む): 51184224

約数和(自身を除く): 32676228

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 71, 78, 117, 142, 156, 213, 234, 284, 426, 468, 557, 639, 852, 923, 1114, 1278, 1671, 1846, 2228, 2556, 2769, 3342, 3692, 5013, 5538, 6684, 7241, 8307, 10026, 11076, 14482, 16614, 20052, 21723, 28964, 33228, 39547, 43446, 65169, 79094, 86892, 118641, 130338, 158188, 237282, 260676, 355923, 474564, 514111, 711846, 1028222, 1423692, 1542333, 2056444, 3084666, 4626999, 6169332, 9253998, 18507996]

約数ペア:

[(1, 18507996), (2, 9253998), (3, 6169332), (4, 4626999), (6, 3084666), (9, 2056444), (12, 1542333), (13, 1423692), (18, 1028222), (26, 711846), (36, 514111), (39, 474564), (52, 355923), (71, 260676), (78, 237282), (117, 158188), (142, 130338), (156, 118641), (213, 86892), (234, 79094), (284, 65169), (426, 43446), (468, 39547), (557, 33228), (639, 28964), (852, 21723), (923, 20052), (1114, 16614), (1278, 14482), (1671, 11076), (1846, 10026), (2228, 8307), (2556, 7241), (2769, 6684), (3342, 5538), (3692, 5013)]