20906080

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2$

素因数の和:93

約数の個数: 144

約数和(自身を含む): 58529520

約数和(自身を除く): 37623440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 23, 26, 32, 38, 40, 46, 52, 65, 76, 80, 92, 95, 104, 115, 130, 152, 160, 184, 190, 208, 230, 247, 260, 299, 304, 368, 380, 416, 437, 460, 494, 520, 529, 598, 608, 736, 760, 874, 920, 988, 1040, 1058, 1196, 1235, 1495, 1520, 1748, 1840, 1976, 2080, 2116, 2185, 2392, 2470, 2645, 2990, 3040, 3496, 3680, 3952, 4232, 4370, 4784, 4940, 5290, 5681, 5980, 6877, 6992, 7904, 8464, 8740, 9568, 9880, 10051, 10580, 11362, 11960, 13754, 13984, 16928, 17480, 19760, 20102, 21160, 22724, 23920, 27508, 28405, 34385, 34960, 39520, 40204, 42320, 45448, 47840, 50255, 55016, 56810, 68770, 69920, 80408, 84640, 90896, 100510, 110032, 113620, 130663, 137540, 160816, 181792, 201020, 220064, 227240, 261326, 275080, 321632, 402040, 454480, 522652, 550160, 653315, 804080, 908960, 1045304, 1100320, 1306630, 1608160, 2090608, 2613260, 4181216, 5226520, 10453040, 20906080]

約数ペア:

[(1, 20906080), (2, 10453040), (4, 5226520), (5, 4181216), (8, 2613260), (10, 2090608), (13, 1608160), (16, 1306630), (19, 1100320), (20, 1045304), (23, 908960), (26, 804080), (32, 653315), (38, 550160), (40, 522652), (46, 454480), (52, 402040), (65, 321632), (76, 275080), (80, 261326), (92, 227240), (95, 220064), (104, 201020), (115, 181792), (130, 160816), (152, 137540), (160, 130663), (184, 113620), (190, 110032), (208, 100510), (230, 90896), (247, 84640), (260, 80408), (299, 69920), (304, 68770), (368, 56810), (380, 55016), (416, 50255), (437, 47840), (460, 45448), (494, 42320), (520, 40204), (529, 39520), (598, 34960), (608, 34385), (736, 28405), (760, 27508), (874, 23920), (920, 22724), (988, 21160), (1040, 20102), (1058, 19760), (1196, 17480), (1235, 16928), (1495, 13984), (1520, 13754), (1748, 11960), (1840, 11362), (1976, 10580), (2080, 10051), (2116, 9880), (2185, 9568), (2392, 8740), (2470, 8464), (2645, 7904), (2990, 6992), (3040, 6877), (3496, 5980), (3680, 5681), (3952, 5290), (4232, 4940), (4370, 4784)]