645372

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 2018016

約数和(自身を除く): 1372644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 197, 234, 252, 273, 364, 394, 468, 546, 591, 788, 819, 1092, 1182, 1379, 1638, 1773, 2364, 2561, 2758, 3276, 3546, 4137, 5122, 5516, 7092, 7683, 8274, 10244, 12411, 15366, 16548, 17927, 23049, 24822, 30732, 35854, 46098, 49644, 53781, 71708, 92196, 107562, 161343, 215124, 322686, 645372]

約数ペア:

[(1, 645372), (2, 322686), (3, 215124), (4, 161343), (6, 107562), (7, 92196), (9, 71708), (12, 53781), (13, 49644), (14, 46098), (18, 35854), (21, 30732), (26, 24822), (28, 23049), (36, 17927), (39, 16548), (42, 15366), (52, 12411), (63, 10244), (78, 8274), (84, 7683), (91, 7092), (117, 5516), (126, 5122), (156, 4137), (182, 3546), (197, 3276), (234, 2758), (252, 2561), (273, 2364), (364, 1773), (394, 1638), (468, 1379), (546, 1182), (591, 1092), (788, 819)]