215881586

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 339691968

約数和(自身を除く): 123810382

約数列:

[1, 2, 43, 73, 86, 137, 146, 251, 274, 502, 3139, 5891, 6278, 10001, 10793, 11782, 18323, 20002, 21586, 34387, 36646, 68774, 430043, 787889, 860086, 1478641, 1575778, 2510251, 2957282, 5020502, 107940793, 215881586]

約数ペア:

[(1, 215881586), (2, 107940793), (43, 5020502), (73, 2957282), (86, 2510251), (137, 1575778), (146, 1478641), (251, 860086), (274, 787889), (502, 430043), (3139, 68774), (5891, 36646), (6278, 34387), (10001, 21586), (10793, 20002), (11782, 18323)]