2018879980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{19559}}^1$

素因数の和:19978

約数の個数: 48

約数和(自身を含む): 4577509440

約数和(自身を除く): 2558629460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 397, 794, 1588, 1985, 3970, 5161, 7940, 10322, 19559, 20644, 25805, 39118, 51610, 78236, 97795, 103220, 195590, 254267, 391180, 508534, 1017068, 1271335, 2542670, 5085340, 7764923, 15529846, 31059692, 38824615, 77649230, 100943999, 155298460, 201887998, 403775996, 504719995, 1009439990, 2018879980]

約数ペア:

[(1, 2018879980), (2, 1009439990), (4, 504719995), (5, 403775996), (10, 201887998), (13, 155298460), (20, 100943999), (26, 77649230), (52, 38824615), (65, 31059692), (130, 15529846), (260, 7764923), (397, 5085340), (794, 2542670), (1588, 1271335), (1985, 1017068), (3970, 508534), (5161, 391180), (7940, 254267), (10322, 195590), (19559, 103220), (20644, 97795), (25805, 78236), (39118, 51610)]