20713208

素因数分解:

$2^3\times {\mathrm{17}}^4\times {\mathrm{31}}^1$

素因数の和:105

約数の個数: 40

約数和(自身を含む): 42595680

約数和(自身を除く): 21882472

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 289, 527, 578, 1054, 1156, 2108, 2312, 4216, 4913, 8959, 9826, 17918, 19652, 35836, 39304, 71672, 83521, 152303, 167042, 304606, 334084, 609212, 668168, 1218424, 2589151, 5178302, 10356604, 20713208]

約数ペア:

[(1, 20713208), (2, 10356604), (4, 5178302), (8, 2589151), (17, 1218424), (31, 668168), (34, 609212), (62, 334084), (68, 304606), (124, 167042), (136, 152303), (248, 83521), (289, 71672), (527, 39304), (578, 35836), (1054, 19652), (1156, 17918), (2108, 9826), (2312, 8959), (4216, 4913)]