81728493

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 142884864

約数和(自身を除く): 61156371

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 101, 113, 217, 231, 303, 339, 341, 651, 707, 791, 1023, 1111, 1243, 2121, 2373, 2387, 3131, 3333, 3503, 3729, 7161, 7777, 8701, 9393, 10509, 11413, 21917, 23331, 24521, 26103, 34239, 34441, 38533, 65751, 73563, 79891, 103323, 115599, 125543, 239673, 241087, 269731, 353803, 376629, 723261, 809193, 878801, 1061409, 2476621, 2636403, 3891833, 7429863, 11675499, 27242831, 81728493]

約数ペア:

[(1, 81728493), (3, 27242831), (7, 11675499), (11, 7429863), (21, 3891833), (31, 2636403), (33, 2476621), (77, 1061409), (93, 878801), (101, 809193), (113, 723261), (217, 376629), (231, 353803), (303, 269731), (339, 241087), (341, 239673), (651, 125543), (707, 115599), (791, 103323), (1023, 79891), (1111, 73563), (1243, 65751), (2121, 38533), (2373, 34441), (2387, 34239), (3131, 26103), (3333, 24521), (3503, 23331), (3729, 21917), (7161, 11413), (7777, 10509), (8701, 9393)]