20121406040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1429}}^1\times {\mathrm{20707}}^1$

素因数の和:22164

約数の個数: 64

約数和(自身を含む): 47972152800

約数和(自身を除く): 27850746760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 1429, 2858, 5716, 7145, 11432, 14290, 20707, 24293, 28580, 41414, 48586, 57160, 82828, 97172, 103535, 121465, 165656, 194344, 207070, 242930, 352019, 414140, 485860, 704038, 828280, 971720, 1408076, 1760095, 2816152, 3520190, 7040380, 14080760, 29590303, 59180606, 118361212, 147951515, 236722424, 295903030, 503035151, 591806060, 1006070302, 1183612120, 2012140604, 2515175755, 4024281208, 5030351510, 10060703020, 20121406040]

約数ペア:

[(1, 20121406040), (2, 10060703020), (4, 5030351510), (5, 4024281208), (8, 2515175755), (10, 2012140604), (17, 1183612120), (20, 1006070302), (34, 591806060), (40, 503035151), (68, 295903030), (85, 236722424), (136, 147951515), (170, 118361212), (340, 59180606), (680, 29590303), (1429, 14080760), (2858, 7040380), (5716, 3520190), (7145, 2816152), (11432, 1760095), (14290, 1408076), (20707, 971720), (24293, 828280), (28580, 704038), (41414, 485860), (48586, 414140), (57160, 352019), (82828, 242930), (97172, 207070), (103535, 194344), (121465, 165656)]