20018600

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:283

約数の個数: 96

約数和(自身を含む): 54163200

約数和(自身を除く): 34144600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 79, 100, 140, 158, 175, 181, 200, 280, 316, 350, 362, 395, 553, 632, 700, 724, 790, 905, 1106, 1267, 1400, 1448, 1580, 1810, 1975, 2212, 2534, 2765, 3160, 3620, 3950, 4424, 4525, 5068, 5530, 6335, 7240, 7900, 9050, 10136, 11060, 12670, 13825, 14299, 15800, 18100, 22120, 25340, 27650, 28598, 31675, 36200, 50680, 55300, 57196, 63350, 71495, 100093, 110600, 114392, 126700, 142990, 200186, 253400, 285980, 357475, 400372, 500465, 571960, 714950, 800744, 1000930, 1429900, 2001860, 2502325, 2859800, 4003720, 5004650, 10009300, 20018600]

約数ペア:

[(1, 20018600), (2, 10009300), (4, 5004650), (5, 4003720), (7, 2859800), (8, 2502325), (10, 2001860), (14, 1429900), (20, 1000930), (25, 800744), (28, 714950), (35, 571960), (40, 500465), (50, 400372), (56, 357475), (70, 285980), (79, 253400), (100, 200186), (140, 142990), (158, 126700), (175, 114392), (181, 110600), (200, 100093), (280, 71495), (316, 63350), (350, 57196), (362, 55300), (395, 50680), (553, 36200), (632, 31675), (700, 28598), (724, 27650), (790, 25340), (905, 22120), (1106, 18100), (1267, 15800), (1400, 14299), (1448, 13825), (1580, 12670), (1810, 11060), (1975, 10136), (2212, 9050), (2534, 7900), (2765, 7240), (3160, 6335), (3620, 5530), (3950, 5068), (4424, 4525)]