489778900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:510

約数の個数: 108

約数和(自身を含む): 1169568372

約数和(自身を除く): 679789472

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 73, 100, 130, 146, 169, 260, 292, 325, 338, 365, 397, 650, 676, 730, 794, 845, 949, 1300, 1460, 1588, 1690, 1825, 1898, 1985, 3380, 3650, 3796, 3970, 4225, 4745, 5161, 7300, 7940, 8450, 9490, 9925, 10322, 12337, 16900, 18980, 19850, 20644, 23725, 24674, 25805, 28981, 39700, 47450, 49348, 51610, 57962, 61685, 67093, 94900, 103220, 115924, 123370, 129025, 134186, 144905, 246740, 258050, 268372, 289810, 308425, 335465, 376753, 516100, 579620, 616850, 670930, 724525, 753506, 1233700, 1341860, 1449050, 1507012, 1677325, 1883765, 2898100, 3354650, 3767530, 4897789, 6709300, 7535060, 9418825, 9795578, 18837650, 19591156, 24488945, 37675300, 48977890, 97955780, 122444725, 244889450, 489778900]

約数ペア:

[(1, 489778900), (2, 244889450), (4, 122444725), (5, 97955780), (10, 48977890), (13, 37675300), (20, 24488945), (25, 19591156), (26, 18837650), (50, 9795578), (52, 9418825), (65, 7535060), (73, 6709300), (100, 4897789), (130, 3767530), (146, 3354650), (169, 2898100), (260, 1883765), (292, 1677325), (325, 1507012), (338, 1449050), (365, 1341860), (397, 1233700), (650, 753506), (676, 724525), (730, 670930), (794, 616850), (845, 579620), (949, 516100), (1300, 376753), (1460, 335465), (1588, 308425), (1690, 289810), (1825, 268372), (1898, 258050), (1985, 246740), (3380, 144905), (3650, 134186), (3796, 129025), (3970, 123370), (4225, 115924), (4745, 103220), (5161, 94900), (7300, 67093), (7940, 61685), (8450, 57962), (9490, 51610), (9925, 49348), (10322, 47450), (12337, 39700), (16900, 28981), (18980, 25805), (19850, 24674), (20644, 23725)]