19955780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76753}}^1$

素因数の和:76775

約数の個数: 24

約数和(自身を含む): 45131352

約数和(自身を除く): 25175572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76753, 153506, 307012, 383765, 767530, 997789, 1535060, 1995578, 3991156, 4988945, 9977890, 19955780]

約数ペア:

[(1, 19955780), (2, 9977890), (4, 4988945), (5, 3991156), (10, 1995578), (13, 1535060), (20, 997789), (26, 767530), (52, 383765), (65, 307012), (130, 153506), (260, 76753)]