20214700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 53996544

約数和(自身を除く): 33781844

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 23, 25, 34, 44, 46, 47, 50, 55, 68, 85, 92, 94, 100, 110, 115, 170, 187, 188, 220, 230, 235, 253, 275, 340, 374, 391, 425, 460, 470, 506, 517, 550, 575, 748, 782, 799, 850, 935, 940, 1012, 1034, 1081, 1100, 1150, 1175, 1265, 1564, 1598, 1700, 1870, 1955, 2068, 2162, 2300, 2350, 2530, 2585, 3196, 3740, 3910, 3995, 4301, 4324, 4675, 4700, 5060, 5170, 5405, 6325, 7820, 7990, 8602, 8789, 9350, 9775, 10340, 10810, 11891, 12650, 12925, 15980, 17204, 17578, 18377, 18700, 19550, 19975, 21505, 21620, 23782, 25300, 25850, 27025, 35156, 36754, 39100, 39950, 43010, 43945, 47564, 51700, 54050, 59455, 73508, 79900, 86020, 87890, 91885, 107525, 108100, 118910, 175780, 183770, 202147, 215050, 219725, 237820, 297275, 367540, 404294, 430100, 439450, 459425, 594550, 808588, 878900, 918850, 1010735, 1189100, 1837700, 2021470, 4042940, 5053675, 10107350, 20214700]

約数ペア:

[(1, 20214700), (2, 10107350), (4, 5053675), (5, 4042940), (10, 2021470), (11, 1837700), (17, 1189100), (20, 1010735), (22, 918850), (23, 878900), (25, 808588), (34, 594550), (44, 459425), (46, 439450), (47, 430100), (50, 404294), (55, 367540), (68, 297275), (85, 237820), (92, 219725), (94, 215050), (100, 202147), (110, 183770), (115, 175780), (170, 118910), (187, 108100), (188, 107525), (220, 91885), (230, 87890), (235, 86020), (253, 79900), (275, 73508), (340, 59455), (374, 54050), (391, 51700), (425, 47564), (460, 43945), (470, 43010), (506, 39950), (517, 39100), (550, 36754), (575, 35156), (748, 27025), (782, 25850), (799, 25300), (850, 23782), (935, 21620), (940, 21505), (1012, 19975), (1034, 19550), (1081, 18700), (1100, 18377), (1150, 17578), (1175, 17204), (1265, 15980), (1564, 12925), (1598, 12650), (1700, 11891), (1870, 10810), (1955, 10340), (2068, 9775), (2162, 9350), (2300, 8789), (2350, 8602), (2530, 7990), (2585, 7820), (3196, 6325), (3740, 5405), (3910, 5170), (3995, 5060), (4301, 4700), (4324, 4675)]