21493712

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4159}}^1$

素因数の和:4203

約数の個数: 40

約数和(自身を含む): 46425600

約数和(自身を除く): 24931888

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4159, 5168, 8318, 16636, 33272, 66544, 70703, 79021, 141406, 158042, 282812, 316084, 565624, 632168, 1131248, 1264336, 1343357, 2686714, 5373428, 10746856, 21493712]

約数ペア:

[(1, 21493712), (2, 10746856), (4, 5373428), (8, 2686714), (16, 1343357), (17, 1264336), (19, 1131248), (34, 632168), (38, 565624), (68, 316084), (76, 282812), (136, 158042), (152, 141406), (272, 79021), (304, 70703), (323, 66544), (646, 33272), (1292, 16636), (2584, 8318), (4159, 5168)]