81643628

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{271}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 161215488

約数和(自身を除く): 79571860

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 164, 167, 271, 334, 451, 542, 668, 902, 1084, 1804, 1837, 2981, 3674, 5962, 6847, 7348, 11111, 11924, 13694, 22222, 27388, 44444, 45257, 75317, 90514, 122221, 150634, 181028, 244442, 301268, 488884, 497827, 995654, 1855537, 1991308, 3711074, 7422148, 20410907, 40821814, 81643628]

約数ペア:

[(1, 81643628), (2, 40821814), (4, 20410907), (11, 7422148), (22, 3711074), (41, 1991308), (44, 1855537), (82, 995654), (164, 497827), (167, 488884), (271, 301268), (334, 244442), (451, 181028), (542, 150634), (668, 122221), (902, 90514), (1084, 75317), (1804, 45257), (1837, 44444), (2981, 27388), (3674, 22222), (5962, 13694), (6847, 11924), (7348, 11111)]