27688115

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 42725376

約数和(自身を除く): 15037261

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 151, 155, 169, 217, 403, 455, 755, 845, 1057, 1085, 1183, 1963, 2015, 2821, 4681, 5239, 5285, 5915, 9815, 13741, 14105, 23405, 25519, 26195, 32767, 36673, 60853, 68705, 127595, 163835, 178633, 183365, 304265, 425971, 791089, 893165, 2129855, 3955445, 5537623, 27688115]

約数ペア:

[(1, 27688115), (5, 5537623), (7, 3955445), (13, 2129855), (31, 893165), (35, 791089), (65, 425971), (91, 304265), (151, 183365), (155, 178633), (169, 163835), (217, 127595), (403, 68705), (455, 60853), (755, 36673), (845, 32767), (1057, 26195), (1085, 25519), (1183, 23405), (1963, 14105), (2015, 13741), (2821, 9815), (4681, 5915), (5239, 5285)]