20798800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:221

約数の個数: 120

約数和(自身を含む): 56737440

約数和(自身を除く): 35938640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 29, 40, 44, 50, 55, 58, 80, 88, 100, 110, 116, 145, 163, 176, 200, 220, 232, 275, 290, 319, 326, 400, 440, 464, 550, 580, 638, 652, 725, 815, 880, 1100, 1160, 1276, 1304, 1450, 1595, 1630, 1793, 2200, 2320, 2552, 2608, 2900, 3190, 3260, 3586, 4075, 4400, 4727, 5104, 5800, 6380, 6520, 7172, 7975, 8150, 8965, 9454, 11600, 12760, 13040, 14344, 15950, 16300, 17930, 18908, 23635, 25520, 28688, 31900, 32600, 35860, 37816, 44825, 47270, 51997, 63800, 65200, 71720, 75632, 89650, 94540, 103994, 118175, 127600, 143440, 179300, 189080, 207988, 236350, 259985, 358600, 378160, 415976, 472700, 519970, 717200, 831952, 945400, 1039940, 1299925, 1890800, 2079880, 2599850, 4159760, 5199700, 10399400, 20798800]

約数ペア:

[(1, 20798800), (2, 10399400), (4, 5199700), (5, 4159760), (8, 2599850), (10, 2079880), (11, 1890800), (16, 1299925), (20, 1039940), (22, 945400), (25, 831952), (29, 717200), (40, 519970), (44, 472700), (50, 415976), (55, 378160), (58, 358600), (80, 259985), (88, 236350), (100, 207988), (110, 189080), (116, 179300), (145, 143440), (163, 127600), (176, 118175), (200, 103994), (220, 94540), (232, 89650), (275, 75632), (290, 71720), (319, 65200), (326, 63800), (400, 51997), (440, 47270), (464, 44825), (550, 37816), (580, 35860), (638, 32600), (652, 31900), (725, 28688), (815, 25520), (880, 23635), (1100, 18908), (1160, 17930), (1276, 16300), (1304, 15950), (1450, 14344), (1595, 13040), (1630, 12760), (1793, 11600), (2200, 9454), (2320, 8965), (2552, 8150), (2608, 7975), (2900, 7172), (3190, 6520), (3260, 6380), (3586, 5800), (4075, 5104), (4400, 4727)]