20647510156

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{235369}}^1$

素因数の和:235634

約数の個数: 48

約数和(自身を含む): 44656279360

約数和(自身を除く): 24008769204

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 241, 364, 482, 964, 1687, 3133, 3374, 6266, 6748, 12532, 21931, 43862, 87724, 235369, 470738, 941476, 1647583, 3059797, 3295166, 6119594, 6590332, 12239188, 21418579, 42837158, 56723929, 85674316, 113447858, 226895716, 397067503, 737411077, 794135006, 1474822154, 1588270012, 2949644308, 5161877539, 10323755078, 20647510156]

約数ペア:

[(1, 20647510156), (2, 10323755078), (4, 5161877539), (7, 2949644308), (13, 1588270012), (14, 1474822154), (26, 794135006), (28, 737411077), (52, 397067503), (91, 226895716), (182, 113447858), (241, 85674316), (364, 56723929), (482, 42837158), (964, 21418579), (1687, 12239188), (3133, 6590332), (3374, 6119594), (6266, 3295166), (6748, 3059797), (12532, 1647583), (21931, 941476), (43862, 470738), (87724, 235369)]