20903540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8783}}^1$

素因数の和:8816

約数の個数: 48

約数和(自身を含む): 53125632

約数和(自身を除く): 32222092

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8783, 17566, 35132, 43915, 61481, 87830, 122962, 149311, 175660, 245924, 298622, 307405, 597244, 614810, 746555, 1045177, 1229620, 1493110, 2090354, 2986220, 4180708, 5225885, 10451770, 20903540]

約数ペア:

[(1, 20903540), (2, 10451770), (4, 5225885), (5, 4180708), (7, 2986220), (10, 2090354), (14, 1493110), (17, 1229620), (20, 1045177), (28, 746555), (34, 614810), (35, 597244), (68, 307405), (70, 298622), (85, 245924), (119, 175660), (140, 149311), (170, 122962), (238, 87830), (340, 61481), (476, 43915), (595, 35132), (1190, 17566), (2380, 8783)]