81936420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^2\times {\mathrm{367}}^1$

素因数の和:501

約数の個数: 72

約数和(自身を含む): 233880192

約数和(自身を除く): 151943772

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 367, 610, 732, 734, 915, 1101, 1220, 1468, 1830, 1835, 2202, 3660, 3670, 3721, 4404, 5505, 7340, 7442, 11010, 11163, 14884, 18605, 22020, 22326, 22387, 37210, 44652, 44774, 55815, 67161, 74420, 89548, 111630, 111935, 134322, 223260, 223870, 268644, 335805, 447740, 671610, 1343220, 1365607, 2731214, 4096821, 5462428, 6828035, 8193642, 13656070, 16387284, 20484105, 27312140, 40968210, 81936420]

約数ペア:

[(1, 81936420), (2, 40968210), (3, 27312140), (4, 20484105), (5, 16387284), (6, 13656070), (10, 8193642), (12, 6828035), (15, 5462428), (20, 4096821), (30, 2731214), (60, 1365607), (61, 1343220), (122, 671610), (183, 447740), (244, 335805), (305, 268644), (366, 223870), (367, 223260), (610, 134322), (732, 111935), (734, 111630), (915, 89548), (1101, 74420), (1220, 67161), (1468, 55815), (1830, 44774), (1835, 44652), (2202, 37210), (3660, 22387), (3670, 22326), (3721, 22020), (4404, 18605), (5505, 14884), (7340, 11163), (7442, 11010)]