28102220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{797}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 61937568

約数和(自身を除く): 33835348

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 797, 820, 860, 1594, 1763, 3188, 3526, 3985, 7052, 7970, 8815, 15940, 17630, 32677, 34271, 35260, 65354, 68542, 130708, 137084, 163385, 171355, 326770, 342710, 653540, 685420, 1405111, 2810222, 5620444, 7025555, 14051110, 28102220]

約数ペア:

[(1, 28102220), (2, 14051110), (4, 7025555), (5, 5620444), (10, 2810222), (20, 1405111), (41, 685420), (43, 653540), (82, 342710), (86, 326770), (164, 171355), (172, 163385), (205, 137084), (215, 130708), (410, 68542), (430, 65354), (797, 35260), (820, 34271), (860, 32677), (1594, 17630), (1763, 15940), (3188, 8815), (3526, 7970), (3985, 7052)]