28477280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13691}}^1$

素因数の和:13719

約数の個数: 48

約数和(自身を含む): 72458064

約数和(自身を除く): 43980784

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 13691, 27382, 54764, 68455, 109528, 136910, 177983, 219056, 273820, 355966, 438112, 547640, 711932, 889915, 1095280, 1423864, 1779830, 2190560, 2847728, 3559660, 5695456, 7119320, 14238640, 28477280]

約数ペア:

[(1, 28477280), (2, 14238640), (4, 7119320), (5, 5695456), (8, 3559660), (10, 2847728), (13, 2190560), (16, 1779830), (20, 1423864), (26, 1095280), (32, 889915), (40, 711932), (52, 547640), (65, 438112), (80, 355966), (104, 273820), (130, 219056), (160, 177983), (208, 136910), (260, 109528), (416, 68455), (520, 54764), (1040, 27382), (2080, 13691)]