20015800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2$

素因数の和:98

約数の個数: 144

約数和(自身を含む): 58322160

約数和(自身を除く): 38306360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 25, 28, 29, 34, 35, 40, 50, 56, 58, 68, 70, 85, 100, 116, 119, 136, 140, 145, 170, 175, 200, 203, 232, 238, 280, 290, 340, 350, 406, 425, 476, 493, 580, 595, 680, 700, 725, 812, 841, 850, 952, 986, 1015, 1160, 1190, 1400, 1450, 1624, 1682, 1700, 1972, 2030, 2380, 2465, 2900, 2975, 3364, 3400, 3451, 3944, 4060, 4205, 4760, 4930, 5075, 5800, 5887, 5950, 6728, 6902, 8120, 8410, 9860, 10150, 11774, 11900, 12325, 13804, 14297, 16820, 17255, 19720, 20300, 21025, 23548, 23800, 24650, 27608, 28594, 29435, 33640, 34510, 40600, 42050, 47096, 49300, 57188, 58870, 69020, 71485, 84100, 86275, 98600, 100079, 114376, 117740, 138040, 142970, 147175, 168200, 172550, 200158, 235480, 285940, 294350, 345100, 357425, 400316, 500395, 571880, 588700, 690200, 714850, 800632, 1000790, 1177400, 1429700, 2001580, 2501975, 2859400, 4003160, 5003950, 10007900, 20015800]

約数ペア:

[(1, 20015800), (2, 10007900), (4, 5003950), (5, 4003160), (7, 2859400), (8, 2501975), (10, 2001580), (14, 1429700), (17, 1177400), (20, 1000790), (25, 800632), (28, 714850), (29, 690200), (34, 588700), (35, 571880), (40, 500395), (50, 400316), (56, 357425), (58, 345100), (68, 294350), (70, 285940), (85, 235480), (100, 200158), (116, 172550), (119, 168200), (136, 147175), (140, 142970), (145, 138040), (170, 117740), (175, 114376), (200, 100079), (203, 98600), (232, 86275), (238, 84100), (280, 71485), (290, 69020), (340, 58870), (350, 57188), (406, 49300), (425, 47096), (476, 42050), (493, 40600), (580, 34510), (595, 33640), (680, 29435), (700, 28594), (725, 27608), (812, 24650), (841, 23800), (850, 23548), (952, 21025), (986, 20300), (1015, 19720), (1160, 17255), (1190, 16820), (1400, 14297), (1450, 13804), (1624, 12325), (1682, 11900), (1700, 11774), (1972, 10150), (2030, 9860), (2380, 8410), (2465, 8120), (2900, 6902), (2975, 6728), (3364, 5950), (3400, 5887), (3451, 5800), (3944, 5075), (4060, 4930), (4205, 4760)]