81507618

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:204

約数の個数: 72

約数和(自身を含む): 188997120

約数和(自身を除く): 107489502

約数列:

[1, 2, 3, 6, 9, 18, 31, 43, 62, 79, 86, 93, 129, 158, 186, 237, 258, 279, 387, 474, 558, 711, 774, 1333, 1422, 1849, 2449, 2666, 3397, 3698, 3999, 4898, 5547, 6794, 7347, 7998, 10191, 11094, 11997, 14694, 16641, 20382, 22041, 23994, 30573, 33282, 44082, 57319, 61146, 105307, 114638, 146071, 171957, 210614, 292142, 315921, 343914, 438213, 515871, 631842, 876426, 947763, 1031742, 1314639, 1895526, 2629278, 4528201, 9056402, 13584603, 27169206, 40753809, 81507618]

約数ペア:

[(1, 81507618), (2, 40753809), (3, 27169206), (6, 13584603), (9, 9056402), (18, 4528201), (31, 2629278), (43, 1895526), (62, 1314639), (79, 1031742), (86, 947763), (93, 876426), (129, 631842), (158, 515871), (186, 438213), (237, 343914), (258, 315921), (279, 292142), (387, 210614), (474, 171957), (558, 146071), (711, 114638), (774, 105307), (1333, 61146), (1422, 57319), (1849, 44082), (2449, 33282), (2666, 30573), (3397, 23994), (3698, 22041), (3999, 20382), (4898, 16641), (5547, 14694), (6794, 11997), (7347, 11094), (7998, 10191)]