20477600

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1$

素因数の和:223

約数の個数: 144

約数和(自身を含む): 59058720

約数和(自身を除く): 38581120

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 32, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 160, 176, 179, 200, 208, 220, 260, 275, 286, 325, 352, 358, 400, 416, 440, 520, 550, 572, 650, 715, 716, 800, 880, 895, 1040, 1100, 1144, 1300, 1430, 1432, 1760, 1790, 1969, 2080, 2200, 2288, 2327, 2600, 2860, 2864, 3575, 3580, 3938, 4400, 4475, 4576, 4654, 5200, 5720, 5728, 7150, 7160, 7876, 8800, 8950, 9308, 9845, 10400, 11440, 11635, 14300, 14320, 15752, 17900, 18616, 19690, 22880, 23270, 25597, 28600, 28640, 31504, 35800, 37232, 39380, 46540, 49225, 51194, 57200, 58175, 63008, 71600, 74464, 78760, 93080, 98450, 102388, 114400, 116350, 127985, 143200, 157520, 186160, 196900, 204776, 232700, 255970, 315040, 372320, 393800, 409552, 465400, 511940, 639925, 787600, 819104, 930800, 1023880, 1279850, 1575200, 1861600, 2047760, 2559700, 4095520, 5119400, 10238800, 20477600]

約数ペア:

[(1, 20477600), (2, 10238800), (4, 5119400), (5, 4095520), (8, 2559700), (10, 2047760), (11, 1861600), (13, 1575200), (16, 1279850), (20, 1023880), (22, 930800), (25, 819104), (26, 787600), (32, 639925), (40, 511940), (44, 465400), (50, 409552), (52, 393800), (55, 372320), (65, 315040), (80, 255970), (88, 232700), (100, 204776), (104, 196900), (110, 186160), (130, 157520), (143, 143200), (160, 127985), (176, 116350), (179, 114400), (200, 102388), (208, 98450), (220, 93080), (260, 78760), (275, 74464), (286, 71600), (325, 63008), (352, 58175), (358, 57200), (400, 51194), (416, 49225), (440, 46540), (520, 39380), (550, 37232), (572, 35800), (650, 31504), (715, 28640), (716, 28600), (800, 25597), (880, 23270), (895, 22880), (1040, 19690), (1100, 18616), (1144, 17900), (1300, 15752), (1430, 14320), (1432, 14300), (1760, 11635), (1790, 11440), (1969, 10400), (2080, 9845), (2200, 9308), (2288, 8950), (2327, 8800), (2600, 7876), (2860, 7160), (2864, 7150), (3575, 5728), (3580, 5720), (3938, 5200), (4400, 4654), (4475, 4576)]