128214723

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^3\times {\mathrm{397}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 215970720

約数和(自身を除く): 87755997

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 397, 507, 637, 1183, 1191, 1911, 2197, 2779, 3549, 5161, 6591, 8281, 8337, 15379, 15483, 19453, 24843, 36127, 46137, 58359, 67093, 107653, 108381, 201279, 252889, 322959, 469651, 758667, 872209, 1408953, 2616627, 3287557, 6105463, 9862671, 18316389, 42738241, 128214723]

約数ペア:

[(1, 128214723), (3, 42738241), (7, 18316389), (13, 9862671), (21, 6105463), (39, 3287557), (49, 2616627), (91, 1408953), (147, 872209), (169, 758667), (273, 469651), (397, 322959), (507, 252889), (637, 201279), (1183, 108381), (1191, 107653), (1911, 67093), (2197, 58359), (2779, 46137), (3549, 36127), (5161, 24843), (6591, 19453), (8281, 15483), (8337, 15379)]