21871305920

素因数分解:

$2^6\times 5^1\times {\mathrm{947}}^1\times {\mathrm{72173}}^1$

素因数の和:73137

約数の個数: 56

約数和(自身を含む): 52136765424

約数和(自身を除く): 30265459504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 947, 1894, 3788, 4735, 7576, 9470, 15152, 18940, 30304, 37880, 60608, 72173, 75760, 144346, 151520, 288692, 303040, 360865, 577384, 721730, 1154768, 1443460, 2309536, 2886920, 4619072, 5773840, 11547680, 23095360, 68347831, 136695662, 273391324, 341739155, 546782648, 683478310, 1093565296, 1366956620, 2187130592, 2733913240, 4374261184, 5467826480, 10935652960, 21871305920]

約数ペア:

[(1, 21871305920), (2, 10935652960), (4, 5467826480), (5, 4374261184), (8, 2733913240), (10, 2187130592), (16, 1366956620), (20, 1093565296), (32, 683478310), (40, 546782648), (64, 341739155), (80, 273391324), (160, 136695662), (320, 68347831), (947, 23095360), (1894, 11547680), (3788, 5773840), (4735, 4619072), (7576, 2886920), (9470, 2309536), (15152, 1443460), (18940, 1154768), (30304, 721730), (37880, 577384), (60608, 360865), (72173, 303040), (75760, 288692), (144346, 151520)]