19264940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 41731200

約数和(自身を除く): 22466260

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 137, 158, 178, 274, 316, 356, 395, 445, 548, 685, 790, 890, 1370, 1580, 1780, 2740, 7031, 10823, 12193, 14062, 21646, 24386, 28124, 35155, 43292, 48772, 54115, 60965, 70310, 108230, 121930, 140620, 216460, 243860, 963247, 1926494, 3852988, 4816235, 9632470, 19264940]

約数ペア:

[(1, 19264940), (2, 9632470), (4, 4816235), (5, 3852988), (10, 1926494), (20, 963247), (79, 243860), (89, 216460), (137, 140620), (158, 121930), (178, 108230), (274, 70310), (316, 60965), (356, 54115), (395, 48772), (445, 43292), (548, 35155), (685, 28124), (790, 24386), (890, 21646), (1370, 14062), (1580, 12193), (1780, 10823), (2740, 7031)]