81273400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31259}}^1$

素因数の和:31288

約数の個数: 48

約数和(自身を含む): 203502600

約数和(自身を除く): 122229200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 31259, 62518, 125036, 156295, 250072, 312590, 406367, 625180, 781475, 812734, 1250360, 1562950, 1625468, 2031835, 3125900, 3250936, 4063670, 6251800, 8127340, 10159175, 16254680, 20318350, 40636700, 81273400]

約数ペア:

[(1, 81273400), (2, 40636700), (4, 20318350), (5, 16254680), (8, 10159175), (10, 8127340), (13, 6251800), (20, 4063670), (25, 3250936), (26, 3125900), (40, 2031835), (50, 1625468), (52, 1562950), (65, 1250360), (100, 812734), (104, 781475), (130, 625180), (200, 406367), (260, 312590), (325, 250072), (520, 156295), (650, 125036), (1300, 62518), (2600, 31259)]