21397390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{17981}}^1$

素因数の和:18012

約数の個数: 32

約数和(自身を含む): 46609344

約数和(自身を除く): 25211954

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190, 17981, 35962, 89905, 125867, 179810, 251734, 305677, 611354, 629335, 1258670, 1528385, 2139739, 3056770, 4279478, 10698695, 21397390]

約数ペア:

[(1, 21397390), (2, 10698695), (5, 4279478), (7, 3056770), (10, 2139739), (14, 1528385), (17, 1258670), (34, 629335), (35, 611354), (70, 305677), (85, 251734), (119, 179810), (170, 125867), (238, 89905), (595, 35962), (1190, 17981)]