21679216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6131}}^1$

素因数の和:6169

約数の個数: 40

約数和(自身を含む): 47903184

約数和(自身を除く): 26223968

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 6131, 12262, 24524, 49048, 79703, 98096, 104227, 159406, 208454, 318812, 416908, 637624, 833816, 1275248, 1354951, 1667632, 2709902, 5419804, 10839608, 21679216]

約数ペア:

[(1, 21679216), (2, 10839608), (4, 5419804), (8, 2709902), (13, 1667632), (16, 1354951), (17, 1275248), (26, 833816), (34, 637624), (52, 416908), (68, 318812), (104, 208454), (136, 159406), (208, 104227), (221, 98096), (272, 79703), (442, 49048), (884, 24524), (1768, 12262), (3536, 6131)]