20254820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1453}}^1$

素因数の和:1520

約数の個数: 48

約数和(自身を含む): 46167408

約数和(自身を除く): 25912588

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1453, 2788, 2906, 3485, 5812, 6970, 7265, 13940, 14530, 24701, 29060, 49402, 59573, 98804, 119146, 123505, 238292, 247010, 297865, 494020, 595730, 1012741, 1191460, 2025482, 4050964, 5063705, 10127410, 20254820]

約数ペア:

[(1, 20254820), (2, 10127410), (4, 5063705), (5, 4050964), (10, 2025482), (17, 1191460), (20, 1012741), (34, 595730), (41, 494020), (68, 297865), (82, 247010), (85, 238292), (164, 123505), (170, 119146), (205, 98804), (340, 59573), (410, 49402), (697, 29060), (820, 24701), (1394, 14530), (1453, 13940), (2788, 7265), (2906, 6970), (3485, 5812)]