161252780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{2239}}^1$

素因数の和:2538

約数の個数: 48

約数和(自身を含む): 366159360

約数和(自身を除く): 204906580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 554, 1108, 1385, 2239, 2770, 3601, 4478, 5540, 7202, 8956, 11195, 14404, 18005, 22390, 29107, 36010, 44780, 58214, 72020, 116428, 145535, 291070, 582140, 620203, 1240406, 2480812, 3101015, 6202030, 8062639, 12404060, 16125278, 32250556, 40313195, 80626390, 161252780]

約数ペア:

[(1, 161252780), (2, 80626390), (4, 40313195), (5, 32250556), (10, 16125278), (13, 12404060), (20, 8062639), (26, 6202030), (52, 3101015), (65, 2480812), (130, 1240406), (260, 620203), (277, 582140), (554, 291070), (1108, 145535), (1385, 116428), (2239, 72020), (2770, 58214), (3601, 44780), (4478, 36010), (5540, 29107), (7202, 22390), (8956, 18005), (11195, 14404)]