18821556

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 51795744

約数和(自身を除く): 32974188

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 131, 156, 234, 262, 307, 393, 468, 524, 614, 786, 921, 1179, 1228, 1572, 1703, 1842, 2358, 2763, 3406, 3684, 3991, 4716, 5109, 5526, 6812, 7982, 10218, 11052, 11973, 15327, 15964, 20436, 23946, 30654, 35919, 40217, 47892, 61308, 71838, 80434, 120651, 143676, 160868, 241302, 361953, 482604, 522821, 723906, 1045642, 1447812, 1568463, 2091284, 3136926, 4705389, 6273852, 9410778, 18821556]

約数ペア:

[(1, 18821556), (2, 9410778), (3, 6273852), (4, 4705389), (6, 3136926), (9, 2091284), (12, 1568463), (13, 1447812), (18, 1045642), (26, 723906), (36, 522821), (39, 482604), (52, 361953), (78, 241302), (117, 160868), (131, 143676), (156, 120651), (234, 80434), (262, 71838), (307, 61308), (393, 47892), (468, 40217), (524, 35919), (614, 30654), (786, 23946), (921, 20436), (1179, 15964), (1228, 15327), (1572, 11973), (1703, 11052), (1842, 10218), (2358, 7982), (2763, 6812), (3406, 5526), (3684, 5109), (3991, 4716)]