21031720197

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{563}}^1\times {\mathrm{2039}}^1$

素因数の和:2833

約数の個数: 32

約数和(自身を含む): 29159792640

約数和(自身を除く): 8128072443

約数列:

[1, 3, 31, 93, 197, 563, 591, 1689, 2039, 6107, 6117, 17453, 18321, 52359, 63209, 110911, 189627, 332733, 401683, 1147957, 1205049, 3438241, 3443871, 10314723, 12452173, 35586667, 37356519, 106760001, 226147529, 678442587, 7010573399, 21031720197]

約数ペア:

[(1, 21031720197), (3, 7010573399), (31, 678442587), (93, 226147529), (197, 106760001), (563, 37356519), (591, 35586667), (1689, 12452173), (2039, 10314723), (6107, 3443871), (6117, 3438241), (17453, 1205049), (18321, 1147957), (52359, 401683), (63209, 332733), (110911, 189627)]