20040800

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:121

約数の個数: 144

約数和(自身を含む): 55121472

約数和(自身を除く): 35080672

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 41, 47, 50, 52, 65, 80, 82, 94, 100, 104, 130, 160, 164, 188, 200, 205, 208, 235, 260, 325, 328, 376, 400, 410, 416, 470, 520, 533, 611, 650, 656, 752, 800, 820, 940, 1025, 1040, 1066, 1175, 1222, 1300, 1312, 1504, 1640, 1880, 1927, 2050, 2080, 2132, 2350, 2444, 2600, 2665, 3055, 3280, 3760, 3854, 4100, 4264, 4700, 4888, 5200, 5330, 6110, 6560, 7520, 7708, 8200, 8528, 9400, 9635, 9776, 10400, 10660, 12220, 13325, 15275, 15416, 16400, 17056, 18800, 19270, 19552, 21320, 24440, 25051, 26650, 30550, 30832, 32800, 37600, 38540, 42640, 48175, 48880, 50102, 53300, 61100, 61664, 77080, 85280, 96350, 97760, 100204, 106600, 122200, 125255, 154160, 192700, 200408, 213200, 244400, 250510, 308320, 385400, 400816, 426400, 488800, 501020, 626275, 770800, 801632, 1002040, 1252550, 1541600, 2004080, 2505100, 4008160, 5010200, 10020400, 20040800]

約数ペア:

[(1, 20040800), (2, 10020400), (4, 5010200), (5, 4008160), (8, 2505100), (10, 2004080), (13, 1541600), (16, 1252550), (20, 1002040), (25, 801632), (26, 770800), (32, 626275), (40, 501020), (41, 488800), (47, 426400), (50, 400816), (52, 385400), (65, 308320), (80, 250510), (82, 244400), (94, 213200), (100, 200408), (104, 192700), (130, 154160), (160, 125255), (164, 122200), (188, 106600), (200, 100204), (205, 97760), (208, 96350), (235, 85280), (260, 77080), (325, 61664), (328, 61100), (376, 53300), (400, 50102), (410, 48880), (416, 48175), (470, 42640), (520, 38540), (533, 37600), (611, 32800), (650, 30832), (656, 30550), (752, 26650), (800, 25051), (820, 24440), (940, 21320), (1025, 19552), (1040, 19270), (1066, 18800), (1175, 17056), (1222, 16400), (1300, 15416), (1312, 15275), (1504, 13325), (1640, 12220), (1880, 10660), (1927, 10400), (2050, 9776), (2080, 9635), (2132, 9400), (2350, 8528), (2444, 8200), (2600, 7708), (2665, 7520), (3055, 6560), (3280, 6110), (3760, 5330), (3854, 5200), (4100, 4888), (4264, 4700)]