221421516

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 553029120

約数和(自身を除く): 331607604

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 79, 114, 158, 228, 237, 316, 361, 474, 647, 722, 948, 1083, 1294, 1444, 1501, 1941, 2166, 2588, 3002, 3882, 4332, 4503, 6004, 7764, 9006, 12293, 18012, 24586, 28519, 36879, 49172, 51113, 57038, 73758, 85557, 102226, 114076, 147516, 153339, 171114, 204452, 233567, 306678, 342228, 467134, 613356, 700701, 934268, 971147, 1401402, 1942294, 2802804, 2913441, 3884588, 5826882, 11653764, 18451793, 36903586, 55355379, 73807172, 110710758, 221421516]

約数ペア:

[(1, 221421516), (2, 110710758), (3, 73807172), (4, 55355379), (6, 36903586), (12, 18451793), (19, 11653764), (38, 5826882), (57, 3884588), (76, 2913441), (79, 2802804), (114, 1942294), (158, 1401402), (228, 971147), (237, 934268), (316, 700701), (361, 613356), (474, 467134), (647, 342228), (722, 306678), (948, 233567), (1083, 204452), (1294, 171114), (1444, 153339), (1501, 147516), (1941, 114076), (2166, 102226), (2588, 85557), (3002, 73758), (3882, 57038), (4332, 51113), (4503, 49172), (6004, 36879), (7764, 28519), (9006, 24586), (12293, 18012)]