661912713

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{2801}}^1$

素因数の和:2867

約数の個数: 72

約数和(自身を含む): 1240232448

約数和(自身を除く): 578319735

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 63, 77, 93, 99, 121, 217, 231, 279, 341, 363, 651, 693, 847, 1023, 1089, 1953, 2387, 2541, 2801, 3069, 3751, 7161, 7623, 8403, 11253, 19607, 21483, 25209, 26257, 30811, 33759, 58821, 78771, 86831, 92433, 176463, 215677, 236313, 260493, 277299, 338921, 607817, 647031, 781479, 955141, 1016763, 1823451, 1941093, 2372447, 2865423, 3050289, 5470353, 6685987, 7117341, 8596269, 10506551, 20057961, 21352023, 31519653, 60173883, 73545857, 94558959, 220637571, 661912713]

約数ペア:

[(1, 661912713), (3, 220637571), (7, 94558959), (9, 73545857), (11, 60173883), (21, 31519653), (31, 21352023), (33, 20057961), (63, 10506551), (77, 8596269), (93, 7117341), (99, 6685987), (121, 5470353), (217, 3050289), (231, 2865423), (279, 2372447), (341, 1941093), (363, 1823451), (651, 1016763), (693, 955141), (847, 781479), (1023, 647031), (1089, 607817), (1953, 338921), (2387, 277299), (2541, 260493), (2801, 236313), (3069, 215677), (3751, 176463), (7161, 92433), (7623, 86831), (8403, 78771), (11253, 58821), (19607, 33759), (21483, 30811), (25209, 26257)]