19999299

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 28984320

約数和(自身を除く): 8985021

約数列:

[1, 3, 29, 47, 67, 73, 87, 141, 201, 219, 1363, 1943, 2117, 3149, 3431, 4089, 4891, 5829, 6351, 9447, 10293, 14673, 91321, 99499, 141839, 229877, 273963, 298497, 425517, 689631, 6666433, 19999299]

約数ペア:

[(1, 19999299), (3, 6666433), (29, 689631), (47, 425517), (67, 298497), (73, 273963), (87, 229877), (141, 141839), (201, 99499), (219, 91321), (1363, 14673), (1943, 10293), (2117, 9447), (3149, 6351), (3431, 5829), (4089, 4891)]