31213105

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 21041615

約数列:

[1, 5, 7, 11, 17, 19, 35, 55, 77, 85, 95, 119, 133, 187, 209, 251, 323, 385, 595, 665, 935, 1045, 1255, 1309, 1463, 1615, 1757, 2261, 2761, 3553, 4267, 4769, 6545, 7315, 8785, 11305, 13805, 17765, 19327, 21335, 23845, 24871, 29869, 33383, 46937, 52459, 81073, 96635, 124355, 149345, 166915, 234685, 262295, 328559, 367213, 405365, 567511, 891803, 1642795, 1836065, 2837555, 4459015, 6242621, 31213105]

約数ペア:

[(1, 31213105), (5, 6242621), (7, 4459015), (11, 2837555), (17, 1836065), (19, 1642795), (35, 891803), (55, 567511), (77, 405365), (85, 367213), (95, 328559), (119, 262295), (133, 234685), (187, 166915), (209, 149345), (251, 124355), (323, 96635), (385, 81073), (595, 52459), (665, 46937), (935, 33383), (1045, 29869), (1255, 24871), (1309, 23845), (1463, 21335), (1615, 19327), (1757, 17765), (2261, 13805), (2761, 11305), (3553, 8785), (4267, 7315), (4769, 6545)]