20199266984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{20021}}^1$

素因数の和:20238

約数の個数: 64

約数和(自身を含む): 41625738000

約数和(自身を除く): 21426471016

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 109, 178, 218, 356, 436, 712, 872, 1157, 1417, 2314, 2834, 4628, 5668, 9256, 9701, 11336, 19402, 20021, 38804, 40042, 77608, 80084, 126113, 160168, 252226, 260273, 504452, 520546, 1008904, 1041092, 1781869, 2082184, 2182289, 3563738, 4364578, 7127476, 8729156, 14254952, 17458312, 23164297, 28369757, 46328594, 56739514, 92657188, 113479028, 185314376, 194223721, 226958056, 388447442, 776894884, 1553789768, 2524908373, 5049816746, 10099633492, 20199266984]

約数ペア:

[(1, 20199266984), (2, 10099633492), (4, 5049816746), (8, 2524908373), (13, 1553789768), (26, 776894884), (52, 388447442), (89, 226958056), (104, 194223721), (109, 185314376), (178, 113479028), (218, 92657188), (356, 56739514), (436, 46328594), (712, 28369757), (872, 23164297), (1157, 17458312), (1417, 14254952), (2314, 8729156), (2834, 7127476), (4628, 4364578), (5668, 3563738), (9256, 2182289), (9701, 2082184), (11336, 1781869), (19402, 1041092), (20021, 1008904), (38804, 520546), (40042, 504452), (77608, 260273), (80084, 252226), (126113, 160168)]