291116020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{2003}}^1$

素因数の和:2081

約数の個数: 72

約数和(自身を含む): 677720736

約数和(自身を除く): 386604716

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 215, 260, 338, 430, 559, 676, 845, 860, 1118, 1690, 2003, 2236, 2795, 3380, 4006, 5590, 7267, 8012, 10015, 11180, 14534, 20030, 26039, 29068, 36335, 40060, 52078, 72670, 86129, 104156, 130195, 145340, 172258, 260390, 338507, 344516, 430645, 520780, 677014, 861290, 1119677, 1354028, 1692535, 1722580, 2239354, 3385070, 4478708, 5598385, 6770140, 11196770, 14555801, 22393540, 29111602, 58223204, 72779005, 145558010, 291116020]

約数ペア:

[(1, 291116020), (2, 145558010), (4, 72779005), (5, 58223204), (10, 29111602), (13, 22393540), (20, 14555801), (26, 11196770), (43, 6770140), (52, 5598385), (65, 4478708), (86, 3385070), (130, 2239354), (169, 1722580), (172, 1692535), (215, 1354028), (260, 1119677), (338, 861290), (430, 677014), (559, 520780), (676, 430645), (845, 344516), (860, 338507), (1118, 260390), (1690, 172258), (2003, 145340), (2236, 130195), (2795, 104156), (3380, 86129), (4006, 72670), (5590, 52078), (7267, 40060), (8012, 36335), (10015, 29068), (11180, 26039), (14534, 20030)]