640980002

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{751}}^1\times {\mathrm{1931}}^1$

素因数の和:2714

約数の個数: 32

約数和(自身を含む): 1098365184

約数和(自身を除く): 457385182

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 751, 1502, 1931, 3862, 9763, 12767, 19526, 25103, 25534, 32827, 50206, 65654, 165971, 331942, 426751, 853502, 1450181, 2900362, 18852353, 24653077, 37704706, 49306154, 320490001, 640980002]

約数ペア:

[(1, 640980002), (2, 320490001), (13, 49306154), (17, 37704706), (26, 24653077), (34, 18852353), (221, 2900362), (442, 1450181), (751, 853502), (1502, 426751), (1931, 331942), (3862, 165971), (9763, 65654), (12767, 50206), (19526, 32827), (25103, 25534)]