20977390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1381}}^1$

素因数の和:1433

約数の個数: 48

約数和(自身を含む): 45373824

約数和(自身を除く): 24396434

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 49, 62, 70, 98, 155, 217, 245, 310, 434, 490, 1085, 1381, 1519, 2170, 2762, 3038, 6905, 7595, 9667, 13810, 15190, 19334, 42811, 48335, 67669, 85622, 96670, 135338, 214055, 299677, 338345, 428110, 599354, 676690, 1498385, 2097739, 2996770, 4195478, 10488695, 20977390]

約数ペア:

[(1, 20977390), (2, 10488695), (5, 4195478), (7, 2996770), (10, 2097739), (14, 1498385), (31, 676690), (35, 599354), (49, 428110), (62, 338345), (70, 299677), (98, 214055), (155, 135338), (217, 96670), (245, 85622), (310, 67669), (434, 48335), (490, 42811), (1085, 19334), (1381, 15190), (1519, 13810), (2170, 9667), (2762, 7595), (3038, 6905)]