20478064

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{953}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 42586560

約数和(自身を除く): 22108496

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 79, 136, 158, 272, 316, 632, 953, 1264, 1343, 1906, 2686, 3812, 5372, 7624, 10744, 15248, 16201, 21488, 32402, 64804, 75287, 129608, 150574, 259216, 301148, 602296, 1204592, 1279879, 2559758, 5119516, 10239032, 20478064]

約数ペア:

[(1, 20478064), (2, 10239032), (4, 5119516), (8, 2559758), (16, 1279879), (17, 1204592), (34, 602296), (68, 301148), (79, 259216), (136, 150574), (158, 129608), (272, 75287), (316, 64804), (632, 32402), (953, 21488), (1264, 16201), (1343, 15248), (1906, 10744), (2686, 7624), (3812, 5372)]