20647146

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{677}}^1$

素因数の和:735

約数の個数: 64

約数和(自身を含む): 49206528

約数和(自身を除く): 28559382

約数列:

[1, 2, 3, 6, 13, 17, 23, 26, 34, 39, 46, 51, 69, 78, 102, 138, 221, 299, 391, 442, 598, 663, 677, 782, 897, 1173, 1326, 1354, 1794, 2031, 2346, 4062, 5083, 8801, 10166, 11509, 15249, 15571, 17602, 23018, 26403, 30498, 31142, 34527, 46713, 52806, 69054, 93426, 149617, 202423, 264707, 299234, 404846, 448851, 529414, 607269, 794121, 897702, 1214538, 1588242, 3441191, 6882382, 10323573, 20647146]

約数ペア:

[(1, 20647146), (2, 10323573), (3, 6882382), (6, 3441191), (13, 1588242), (17, 1214538), (23, 897702), (26, 794121), (34, 607269), (39, 529414), (46, 448851), (51, 404846), (69, 299234), (78, 264707), (102, 202423), (138, 149617), (221, 93426), (299, 69054), (391, 52806), (442, 46713), (598, 34527), (663, 31142), (677, 30498), (782, 26403), (897, 23018), (1173, 17602), (1326, 15571), (1354, 15249), (1794, 11509), (2031, 10166), (2346, 8801), (4062, 5083)]