28412780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 96

約数和(自身を含む): 70543872

約数和(自身を除く): 42131092

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 71, 85, 107, 110, 142, 170, 187, 214, 220, 284, 340, 355, 374, 428, 535, 710, 748, 781, 935, 1070, 1177, 1207, 1420, 1562, 1819, 1870, 2140, 2354, 2414, 3124, 3638, 3740, 3905, 4708, 4828, 5885, 6035, 7276, 7597, 7810, 9095, 11770, 12070, 13277, 15194, 15620, 18190, 20009, 23540, 24140, 26554, 30388, 36380, 37985, 40018, 53108, 66385, 75970, 80036, 83567, 100045, 129149, 132770, 151940, 167134, 200090, 258298, 265540, 334268, 400180, 417835, 516596, 645745, 835670, 1291490, 1420639, 1671340, 2582980, 2841278, 5682556, 7103195, 14206390, 28412780]

約数ペア:

[(1, 28412780), (2, 14206390), (4, 7103195), (5, 5682556), (10, 2841278), (11, 2582980), (17, 1671340), (20, 1420639), (22, 1291490), (34, 835670), (44, 645745), (55, 516596), (68, 417835), (71, 400180), (85, 334268), (107, 265540), (110, 258298), (142, 200090), (170, 167134), (187, 151940), (214, 132770), (220, 129149), (284, 100045), (340, 83567), (355, 80036), (374, 75970), (428, 66385), (535, 53108), (710, 40018), (748, 37985), (781, 36380), (935, 30388), (1070, 26554), (1177, 24140), (1207, 23540), (1420, 20009), (1562, 18190), (1819, 15620), (1870, 15194), (2140, 13277), (2354, 12070), (2414, 11770), (3124, 9095), (3638, 7810), (3740, 7597), (3905, 7276), (4708, 6035), (4828, 5885)]