20425760

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6719}}^1$

素因数の和:6753

約数の個数: 48

約数和(自身を含む): 50803200

約数和(自身を除く): 30377440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6719, 13438, 26876, 33595, 53752, 67190, 107504, 127661, 134380, 215008, 255322, 268760, 510644, 537520, 638305, 1021288, 1075040, 1276610, 2042576, 2553220, 4085152, 5106440, 10212880, 20425760]

約数ペア:

[(1, 20425760), (2, 10212880), (4, 5106440), (5, 4085152), (8, 2553220), (10, 2042576), (16, 1276610), (19, 1075040), (20, 1021288), (32, 638305), (38, 537520), (40, 510644), (76, 268760), (80, 255322), (95, 215008), (152, 134380), (160, 127661), (190, 107504), (304, 67190), (380, 53752), (608, 33595), (760, 26876), (1520, 13438), (3040, 6719)]