19942000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^2\times {\mathrm{59}}^1$

素因数の和:108

約数の個数: 120

約数和(自身を含む): 53099280

約数和(自身を除く): 33157280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 59, 65, 80, 100, 104, 118, 125, 130, 169, 200, 208, 236, 250, 260, 295, 325, 338, 400, 472, 500, 520, 590, 650, 676, 767, 845, 944, 1000, 1040, 1180, 1300, 1352, 1475, 1534, 1625, 1690, 2000, 2360, 2600, 2704, 2950, 3068, 3250, 3380, 3835, 4225, 4720, 5200, 5900, 6136, 6500, 6760, 7375, 7670, 8450, 9971, 11800, 12272, 13000, 13520, 14750, 15340, 16900, 19175, 19942, 21125, 23600, 26000, 29500, 30680, 33800, 38350, 39884, 42250, 49855, 59000, 61360, 67600, 76700, 79768, 84500, 95875, 99710, 118000, 153400, 159536, 169000, 191750, 199420, 249275, 306800, 338000, 383500, 398840, 498550, 767000, 797680, 997100, 1246375, 1534000, 1994200, 2492750, 3988400, 4985500, 9971000, 19942000]

約数ペア:

[(1, 19942000), (2, 9971000), (4, 4985500), (5, 3988400), (8, 2492750), (10, 1994200), (13, 1534000), (16, 1246375), (20, 997100), (25, 797680), (26, 767000), (40, 498550), (50, 398840), (52, 383500), (59, 338000), (65, 306800), (80, 249275), (100, 199420), (104, 191750), (118, 169000), (125, 159536), (130, 153400), (169, 118000), (200, 99710), (208, 95875), (236, 84500), (250, 79768), (260, 76700), (295, 67600), (325, 61360), (338, 59000), (400, 49855), (472, 42250), (500, 39884), (520, 38350), (590, 33800), (650, 30680), (676, 29500), (767, 26000), (845, 23600), (944, 21125), (1000, 19942), (1040, 19175), (1180, 16900), (1300, 15340), (1352, 14750), (1475, 13520), (1534, 13000), (1625, 12272), (1690, 11800), (2000, 9971), (2360, 8450), (2600, 7670), (2704, 7375), (2950, 6760), (3068, 6500), (3250, 6136), (3380, 5900), (3835, 5200), (4225, 4720)]