87121840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4409}}^1$

素因数の和:4454

約数の個数: 80

約数和(自身を含む): 229672800

約数和(自身を除く): 142550960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4409, 4940, 8818, 9880, 17636, 19760, 22045, 35272, 44090, 57317, 70544, 83771, 88180, 114634, 167542, 176360, 229268, 286585, 335084, 352720, 418855, 458536, 573170, 670168, 837710, 917072, 1089023, 1146340, 1340336, 1675420, 2178046, 2292680, 3350840, 4356092, 4585360, 5445115, 6701680, 8712184, 10890230, 17424368, 21780460, 43560920, 87121840]

約数ペア:

[(1, 87121840), (2, 43560920), (4, 21780460), (5, 17424368), (8, 10890230), (10, 8712184), (13, 6701680), (16, 5445115), (19, 4585360), (20, 4356092), (26, 3350840), (38, 2292680), (40, 2178046), (52, 1675420), (65, 1340336), (76, 1146340), (80, 1089023), (95, 917072), (104, 837710), (130, 670168), (152, 573170), (190, 458536), (208, 418855), (247, 352720), (260, 335084), (304, 286585), (380, 229268), (494, 176360), (520, 167542), (760, 114634), (988, 88180), (1040, 83771), (1235, 70544), (1520, 57317), (1976, 44090), (2470, 35272), (3952, 22045), (4409, 19760), (4940, 17636), (8818, 9880)]