202168840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 465102000

約数和(自身を除く): 262933160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 109, 178, 218, 356, 436, 445, 521, 545, 712, 872, 890, 1042, 1090, 1780, 2084, 2180, 2605, 3560, 4168, 4360, 5210, 9701, 10420, 19402, 20840, 38804, 46369, 48505, 56789, 77608, 92738, 97010, 113578, 185476, 194020, 227156, 231845, 283945, 370952, 388040, 454312, 463690, 567890, 927380, 1135780, 1854760, 2271560, 5054221, 10108442, 20216884, 25271105, 40433768, 50542210, 101084420, 202168840]

約数ペア:

[(1, 202168840), (2, 101084420), (4, 50542210), (5, 40433768), (8, 25271105), (10, 20216884), (20, 10108442), (40, 5054221), (89, 2271560), (109, 1854760), (178, 1135780), (218, 927380), (356, 567890), (436, 463690), (445, 454312), (521, 388040), (545, 370952), (712, 283945), (872, 231845), (890, 227156), (1042, 194020), (1090, 185476), (1780, 113578), (2084, 97010), (2180, 92738), (2605, 77608), (3560, 56789), (4168, 48505), (4360, 46369), (5210, 38804), (9701, 20840), (10420, 19402)]