20259248

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{347}}^1$

素因数の和:485

約数の個数: 40

約数和(自身を含む): 40778640

約数和(自身を除く): 20519392

約数列:

[1, 2, 4, 8, 16, 41, 82, 89, 164, 178, 328, 347, 356, 656, 694, 712, 1388, 1424, 2776, 3649, 5552, 7298, 14227, 14596, 28454, 29192, 30883, 56908, 58384, 61766, 113816, 123532, 227632, 247064, 494128, 1266203, 2532406, 5064812, 10129624, 20259248]

約数ペア:

[(1, 20259248), (2, 10129624), (4, 5064812), (8, 2532406), (16, 1266203), (41, 494128), (82, 247064), (89, 227632), (164, 123532), (178, 113816), (328, 61766), (347, 58384), (356, 56908), (656, 30883), (694, 29192), (712, 28454), (1388, 14596), (1424, 14227), (2776, 7298), (3649, 5552)]