21874928

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1531}}^1$

素因数の和:1605

約数の個数: 40

約数和(自身を含む): 45592320

約数和(自身を除く): 23717392

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 1531, 1786, 3062, 3572, 6124, 7144, 12248, 14288, 24496, 29089, 58178, 71957, 116356, 143914, 232712, 287828, 465424, 575656, 1151312, 1367183, 2734366, 5468732, 10937464, 21874928]

約数ペア:

[(1, 21874928), (2, 10937464), (4, 5468732), (8, 2734366), (16, 1367183), (19, 1151312), (38, 575656), (47, 465424), (76, 287828), (94, 232712), (152, 143914), (188, 116356), (304, 71957), (376, 58178), (752, 29089), (893, 24496), (1531, 14288), (1786, 12248), (3062, 7144), (3572, 6124)]