21530806

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2503}}^1$

素因数の和:2556

約数の個数: 32

約数和(自身を含む): 38942208

約数和(自身を除く): 17411402

約数列:

[1, 2, 11, 17, 22, 23, 34, 46, 187, 253, 374, 391, 506, 782, 2503, 4301, 5006, 8602, 27533, 42551, 55066, 57569, 85102, 115138, 468061, 633259, 936122, 978673, 1266518, 1957346, 10765403, 21530806]

約数ペア:

[(1, 21530806), (2, 10765403), (11, 1957346), (17, 1266518), (22, 978673), (23, 936122), (34, 633259), (46, 468061), (187, 115138), (253, 85102), (374, 57569), (391, 55066), (506, 42551), (782, 27533), (2503, 8602), (4301, 5006)]