644549145

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{5521}}^1$

素因数の和:5753

約数の個数: 32

約数和(自身を含む): 1061284224

約数和(自身を除く): 416735079

約数列:

[1, 3, 5, 15, 43, 129, 181, 215, 543, 645, 905, 2715, 5521, 7783, 16563, 23349, 27605, 38915, 82815, 116745, 237403, 712209, 999301, 1187015, 2997903, 3561045, 4996505, 14989515, 42969943, 128909829, 214849715, 644549145]

約数ペア:

[(1, 644549145), (3, 214849715), (5, 128909829), (15, 42969943), (43, 14989515), (129, 4996505), (181, 3561045), (215, 2997903), (543, 1187015), (645, 999301), (905, 712209), (2715, 237403), (5521, 116745), (7783, 82815), (16563, 38915), (23349, 27605)]