25318904

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 52418520

約数和(自身を除く): 27099616

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 169, 244, 307, 338, 488, 614, 676, 793, 1228, 1352, 1586, 2456, 3172, 3991, 6344, 7982, 10309, 15964, 18727, 20618, 31928, 37454, 41236, 51883, 74908, 82472, 103766, 149816, 207532, 243451, 415064, 486902, 973804, 1947608, 3164863, 6329726, 12659452, 25318904]

約数ペア:

[(1, 25318904), (2, 12659452), (4, 6329726), (8, 3164863), (13, 1947608), (26, 973804), (52, 486902), (61, 415064), (104, 243451), (122, 207532), (169, 149816), (244, 103766), (307, 82472), (338, 74908), (488, 51883), (614, 41236), (676, 37454), (793, 31928), (1228, 20618), (1352, 18727), (1586, 15964), (2456, 10309), (3172, 7982), (3991, 6344)]