221267956

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19609}}^1$

素因数の和:19664

約数の個数: 48

約数和(自身を含む): 491975680

約数和(自身を除く): 270707724

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 182, 217, 364, 403, 434, 806, 868, 1612, 2821, 5642, 11284, 19609, 39218, 78436, 137263, 254917, 274526, 509834, 549052, 607879, 1019668, 1215758, 1784419, 2431516, 3568838, 4255153, 7137676, 7902427, 8510306, 15804854, 17020612, 31609708, 55316989, 110633978, 221267956]

約数ペア:

[(1, 221267956), (2, 110633978), (4, 55316989), (7, 31609708), (13, 17020612), (14, 15804854), (26, 8510306), (28, 7902427), (31, 7137676), (52, 4255153), (62, 3568838), (91, 2431516), (124, 1784419), (182, 1215758), (217, 1019668), (364, 607879), (403, 549052), (434, 509834), (806, 274526), (868, 254917), (1612, 137263), (2821, 78436), (5642, 39218), (11284, 19609)]