20280169

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 36

約数和(自身を含む): 26703360

約数和(自身を除く): 6423191

約数列:

[1, 7, 13, 31, 49, 79, 91, 169, 217, 403, 553, 637, 1027, 1183, 1519, 2449, 2821, 3871, 5239, 7189, 8281, 13351, 17143, 19747, 31837, 36673, 50323, 93457, 120001, 222859, 256711, 413881, 654199, 1560013, 2897167, 20280169]

約数ペア:

[(1, 20280169), (7, 2897167), (13, 1560013), (31, 654199), (49, 413881), (79, 256711), (91, 222859), (169, 120001), (217, 93457), (403, 50323), (553, 36673), (637, 31837), (1027, 19747), (1183, 17143), (1519, 13351), (2449, 8281), (2821, 7189), (3871, 5239)]