42642620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 91808640

約数和(自身を除く): 49166020

約数列:

[1, 2, 4, 5, 10, 20, 79, 137, 158, 197, 274, 316, 394, 395, 548, 685, 788, 790, 985, 1370, 1580, 1970, 2740, 3940, 10823, 15563, 21646, 26989, 31126, 43292, 53978, 54115, 62252, 77815, 107956, 108230, 134945, 155630, 216460, 269890, 311260, 539780, 2132131, 4264262, 8528524, 10660655, 21321310, 42642620]

約数ペア:

[(1, 42642620), (2, 21321310), (4, 10660655), (5, 8528524), (10, 4264262), (20, 2132131), (79, 539780), (137, 311260), (158, 269890), (197, 216460), (274, 155630), (316, 134945), (394, 108230), (395, 107956), (548, 77815), (685, 62252), (788, 54115), (790, 53978), (985, 43292), (1370, 31126), (1580, 26989), (1970, 21646), (2740, 15563), (3940, 10823)]