31716279

素因数分解:

$3^4\times 7^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 60

約数和(自身を含む): 56445048

約数和(自身を除く): 24728769

約数列:

[1, 3, 7, 9, 21, 27, 49, 61, 63, 81, 131, 147, 183, 189, 393, 427, 441, 549, 567, 917, 1179, 1281, 1323, 1647, 2751, 2989, 3537, 3843, 3969, 4941, 6419, 7991, 8253, 8967, 10611, 11529, 19257, 23973, 24759, 26901, 34587, 55937, 57771, 71919, 74277, 80703, 167811, 173313, 215757, 242109, 391559, 503433, 519939, 647271, 1174677, 1510299, 3524031, 4530897, 10572093, 31716279]

約数ペア:

[(1, 31716279), (3, 10572093), (7, 4530897), (9, 3524031), (21, 1510299), (27, 1174677), (49, 647271), (61, 519939), (63, 503433), (81, 391559), (131, 242109), (147, 215757), (183, 173313), (189, 167811), (393, 80703), (427, 74277), (441, 71919), (549, 57771), (567, 55937), (917, 34587), (1179, 26901), (1281, 24759), (1323, 23973), (1647, 19257), (2751, 11529), (2989, 10611), (3537, 8967), (3843, 8253), (3969, 7991), (4941, 6419)]