28679455

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 43256160

約数和(自身を除く): 14576705

約数列:

[1, 5, 7, 19, 35, 49, 61, 95, 101, 133, 245, 305, 427, 505, 665, 707, 931, 1159, 1919, 2135, 2989, 3535, 4655, 4949, 5795, 6161, 8113, 9595, 13433, 14945, 24745, 30805, 40565, 43127, 56791, 67165, 94031, 117059, 215635, 283955, 301889, 470155, 585295, 819413, 1509445, 4097065, 5735891, 28679455]

約数ペア:

[(1, 28679455), (5, 5735891), (7, 4097065), (19, 1509445), (35, 819413), (49, 585295), (61, 470155), (95, 301889), (101, 283955), (133, 215635), (245, 117059), (305, 94031), (427, 67165), (505, 56791), (665, 43127), (707, 40565), (931, 30805), (1159, 24745), (1919, 14945), (2135, 13433), (2989, 9595), (3535, 8113), (4655, 6161), (4949, 5795)]