20557680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{599}}^1$

素因数の和:639

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 54437520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 16, 20, 22, 24, 26, 30, 33, 39, 40, 44, 48, 52, 55, 60, 65, 66, 78, 80, 88, 104, 110, 120, 130, 132, 143, 156, 165, 176, 195, 208, 220, 240, 260, 264, 286, 312, 330, 390, 429, 440, 520, 528, 572, 599, 624, 660, 715, 780, 858, 880, 1040, 1144, 1198, 1320, 1430, 1560, 1716, 1797, 2145, 2288, 2396, 2640, 2860, 2995, 3120, 3432, 3594, 4290, 4792, 5720, 5990, 6589, 6864, 7188, 7787, 8580, 8985, 9584, 11440, 11980, 13178, 14376, 15574, 17160, 17970, 19767, 23361, 23960, 26356, 28752, 31148, 32945, 34320, 35940, 38935, 39534, 46722, 47920, 52712, 62296, 65890, 71880, 77870, 79068, 85657, 93444, 98835, 105424, 116805, 124592, 131780, 143760, 155740, 158136, 171314, 186888, 197670, 233610, 256971, 263560, 311480, 316272, 342628, 373776, 395340, 428285, 467220, 513942, 527120, 622960, 685256, 790680, 856570, 934440, 1027884, 1284855, 1370512, 1581360, 1713140, 1868880, 2055768, 2569710, 3426280, 4111536, 5139420, 6852560, 10278840, 20557680]

約数ペア:

[(1, 20557680), (2, 10278840), (3, 6852560), (4, 5139420), (5, 4111536), (6, 3426280), (8, 2569710), (10, 2055768), (11, 1868880), (12, 1713140), (13, 1581360), (15, 1370512), (16, 1284855), (20, 1027884), (22, 934440), (24, 856570), (26, 790680), (30, 685256), (33, 622960), (39, 527120), (40, 513942), (44, 467220), (48, 428285), (52, 395340), (55, 373776), (60, 342628), (65, 316272), (66, 311480), (78, 263560), (80, 256971), (88, 233610), (104, 197670), (110, 186888), (120, 171314), (130, 158136), (132, 155740), (143, 143760), (156, 131780), (165, 124592), (176, 116805), (195, 105424), (208, 98835), (220, 93444), (240, 85657), (260, 79068), (264, 77870), (286, 71880), (312, 65890), (330, 62296), (390, 52712), (429, 47920), (440, 46722), (520, 39534), (528, 38935), (572, 35940), (599, 34320), (624, 32945), (660, 31148), (715, 28752), (780, 26356), (858, 23960), (880, 23361), (1040, 19767), (1144, 17970), (1198, 17160), (1320, 15574), (1430, 14376), (1560, 13178), (1716, 11980), (1797, 11440), (2145, 9584), (2288, 8985), (2396, 8580), (2640, 7787), (2860, 7188), (2995, 6864), (3120, 6589), (3432, 5990), (3594, 5720), (4290, 4792)]