87431920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{593}}^1$

素因数の和:722

約数の個数: 80

約数和(自身を含む): 216548640

約数和(自身を除く): 129116720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 97, 152, 190, 194, 304, 380, 388, 485, 593, 760, 776, 970, 1186, 1520, 1552, 1843, 1940, 2372, 2965, 3686, 3880, 4744, 5930, 7372, 7760, 9215, 9488, 11267, 11860, 14744, 18430, 22534, 23720, 29488, 36860, 45068, 47440, 56335, 57521, 73720, 90136, 112670, 115042, 147440, 180272, 225340, 230084, 287605, 450680, 460168, 575210, 901360, 920336, 1092899, 1150420, 2185798, 2300840, 4371596, 4601680, 5464495, 8743192, 10928990, 17486384, 21857980, 43715960, 87431920]

約数ペア:

[(1, 87431920), (2, 43715960), (4, 21857980), (5, 17486384), (8, 10928990), (10, 8743192), (16, 5464495), (19, 4601680), (20, 4371596), (38, 2300840), (40, 2185798), (76, 1150420), (80, 1092899), (95, 920336), (97, 901360), (152, 575210), (190, 460168), (194, 450680), (304, 287605), (380, 230084), (388, 225340), (485, 180272), (593, 147440), (760, 115042), (776, 112670), (970, 90136), (1186, 73720), (1520, 57521), (1552, 56335), (1843, 47440), (1940, 45068), (2372, 36860), (2965, 29488), (3686, 23720), (3880, 22534), (4744, 18430), (5930, 14744), (7372, 11860), (7760, 11267), (9215, 9488)]