80821000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6217}}^1$

素因数の和:6251

約数の個数: 64

約数和(自身を含む): 203701680

約数和(自身を除く): 122880680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1625, 2600, 3250, 6217, 6500, 12434, 13000, 24868, 31085, 49736, 62170, 80821, 124340, 155425, 161642, 248680, 310850, 323284, 404105, 621700, 646568, 777125, 808210, 1243400, 1554250, 1616420, 2020525, 3108500, 3232840, 4041050, 6217000, 8082100, 10102625, 16164200, 20205250, 40410500, 80821000]

約数ペア:

[(1, 80821000), (2, 40410500), (4, 20205250), (5, 16164200), (8, 10102625), (10, 8082100), (13, 6217000), (20, 4041050), (25, 3232840), (26, 3108500), (40, 2020525), (50, 1616420), (52, 1554250), (65, 1243400), (100, 808210), (104, 777125), (125, 646568), (130, 621700), (200, 404105), (250, 323284), (260, 310850), (325, 248680), (500, 161642), (520, 155425), (650, 124340), (1000, 80821), (1300, 62170), (1625, 49736), (2600, 31085), (3250, 24868), (6217, 13000), (6500, 12434)]