81645444

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:681

約数の個数: 72

約数和(自身を含む): 214905600

約数和(自身を除く): 133260156

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 149, 186, 279, 298, 372, 447, 491, 558, 596, 894, 982, 1116, 1341, 1473, 1788, 1964, 2682, 2946, 4419, 4619, 5364, 5892, 8838, 9238, 13857, 15221, 17676, 18476, 27714, 30442, 41571, 45663, 55428, 60884, 73159, 83142, 91326, 136989, 146318, 166284, 182652, 219477, 273978, 292636, 438954, 547956, 658431, 877908, 1316862, 2267929, 2633724, 4535858, 6803787, 9071716, 13607574, 20411361, 27215148, 40822722, 81645444]

約数ペア:

[(1, 81645444), (2, 40822722), (3, 27215148), (4, 20411361), (6, 13607574), (9, 9071716), (12, 6803787), (18, 4535858), (31, 2633724), (36, 2267929), (62, 1316862), (93, 877908), (124, 658431), (149, 547956), (186, 438954), (279, 292636), (298, 273978), (372, 219477), (447, 182652), (491, 166284), (558, 146318), (596, 136989), (894, 91326), (982, 83142), (1116, 73159), (1341, 60884), (1473, 55428), (1788, 45663), (1964, 41571), (2682, 30442), (2946, 27714), (4419, 18476), (4619, 17676), (5364, 15221), (5892, 13857), (8838, 9238)]