21451342

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 38569392

約数和(自身を除く): 17118050

約数列:

[1, 2, 11, 19, 22, 37, 38, 73, 74, 146, 209, 361, 407, 418, 703, 722, 803, 814, 1387, 1406, 1606, 2701, 2774, 3971, 5402, 7733, 7942, 13357, 15257, 15466, 26353, 26714, 29711, 30514, 51319, 52706, 59422, 102638, 146927, 289883, 293854, 564509, 579766, 975061, 1129018, 1950122, 10725671, 21451342]

約数ペア:

[(1, 21451342), (2, 10725671), (11, 1950122), (19, 1129018), (22, 975061), (37, 579766), (38, 564509), (73, 293854), (74, 289883), (146, 146927), (209, 102638), (361, 59422), (407, 52706), (418, 51319), (703, 30514), (722, 29711), (803, 26714), (814, 26353), (1387, 15466), (1406, 15257), (1606, 13357), (2701, 7942), (2774, 7733), (3971, 5402)]