20012200

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 51559200

約数和(自身を除く): 31547000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 43, 50, 52, 65, 86, 100, 104, 130, 172, 179, 200, 215, 260, 325, 344, 358, 430, 520, 559, 650, 716, 860, 895, 1075, 1118, 1300, 1432, 1720, 1790, 2150, 2236, 2327, 2600, 2795, 3580, 4300, 4472, 4475, 4654, 5590, 7160, 7697, 8600, 8950, 9308, 11180, 11635, 13975, 15394, 17900, 18616, 22360, 23270, 27950, 30788, 35800, 38485, 46540, 55900, 58175, 61576, 76970, 93080, 100061, 111800, 116350, 153940, 192425, 200122, 232700, 307880, 384850, 400244, 465400, 500305, 769700, 800488, 1000610, 1539400, 2001220, 2501525, 4002440, 5003050, 10006100, 20012200]

約数ペア:

[(1, 20012200), (2, 10006100), (4, 5003050), (5, 4002440), (8, 2501525), (10, 2001220), (13, 1539400), (20, 1000610), (25, 800488), (26, 769700), (40, 500305), (43, 465400), (50, 400244), (52, 384850), (65, 307880), (86, 232700), (100, 200122), (104, 192425), (130, 153940), (172, 116350), (179, 111800), (200, 100061), (215, 93080), (260, 76970), (325, 61576), (344, 58175), (358, 55900), (430, 46540), (520, 38485), (559, 35800), (650, 30788), (716, 27950), (860, 23270), (895, 22360), (1075, 18616), (1118, 17900), (1300, 15394), (1432, 13975), (1720, 11635), (1790, 11180), (2150, 9308), (2236, 8950), (2327, 8600), (2600, 7697), (2795, 7160), (3580, 5590), (4300, 4654), (4472, 4475)]