980780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 2268000

約数和(自身を除く): 1287220

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 89, 95, 116, 145, 178, 190, 290, 356, 380, 445, 551, 580, 890, 1102, 1691, 1780, 2204, 2581, 2755, 3382, 5162, 5510, 6764, 8455, 10324, 11020, 12905, 16910, 25810, 33820, 49039, 51620, 98078, 196156, 245195, 490390, 980780]

約数ペア:

[(1, 980780), (2, 490390), (4, 245195), (5, 196156), (10, 98078), (19, 51620), (20, 49039), (29, 33820), (38, 25810), (58, 16910), (76, 12905), (89, 11020), (95, 10324), (116, 8455), (145, 6764), (178, 5510), (190, 5162), (290, 3382), (356, 2755), (380, 2581), (445, 2204), (551, 1780), (580, 1691), (890, 1102)]