210003220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{509}}^1$

素因数の和:953

約数の個数: 72

約数和(自身を含む): 515236680

約数和(自身を除く): 305233460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 421, 490, 509, 842, 980, 1018, 1684, 2036, 2105, 2545, 2947, 3563, 4210, 5090, 5894, 7126, 8420, 10180, 11788, 14252, 14735, 17815, 20629, 24941, 29470, 35630, 41258, 49882, 58940, 71260, 82516, 99764, 103145, 124705, 206290, 214289, 249410, 412580, 428578, 498820, 857156, 1071445, 1500023, 2142890, 3000046, 4285780, 6000092, 7500115, 10500161, 15000230, 21000322, 30000460, 42000644, 52500805, 105001610, 210003220]

約数ペア:

[(1, 210003220), (2, 105001610), (4, 52500805), (5, 42000644), (7, 30000460), (10, 21000322), (14, 15000230), (20, 10500161), (28, 7500115), (35, 6000092), (49, 4285780), (70, 3000046), (98, 2142890), (140, 1500023), (196, 1071445), (245, 857156), (421, 498820), (490, 428578), (509, 412580), (842, 249410), (980, 214289), (1018, 206290), (1684, 124705), (2036, 103145), (2105, 99764), (2545, 82516), (2947, 71260), (3563, 58940), (4210, 49882), (5090, 41258), (5894, 35630), (7126, 29470), (8420, 24941), (10180, 20629), (11788, 17815), (14252, 14735)]