20180954780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{2909}}^1\times {\mathrm{7079}}^1$

素因数の和:10011

約数の個数: 72

約数和(自身を含む): 49323103200

約数和(自身を除く): 29142148420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 2909, 5818, 7079, 11636, 14158, 14545, 20363, 28316, 29090, 35395, 40726, 49553, 58180, 70790, 81452, 99106, 101815, 141580, 142541, 198212, 203630, 247765, 285082, 346871, 407260, 495530, 570164, 693742, 712705, 991060, 1387484, 1425410, 1734355, 2850820, 3468710, 6937420, 20592811, 41185622, 82371244, 102964055, 144149677, 205928110, 288299354, 411856220, 576598708, 720748385, 1009047739, 1441496770, 2018095478, 2882993540, 4036190956, 5045238695, 10090477390, 20180954780]

約数ペア:

[(1, 20180954780), (2, 10090477390), (4, 5045238695), (5, 4036190956), (7, 2882993540), (10, 2018095478), (14, 1441496770), (20, 1009047739), (28, 720748385), (35, 576598708), (49, 411856220), (70, 288299354), (98, 205928110), (140, 144149677), (196, 102964055), (245, 82371244), (490, 41185622), (980, 20592811), (2909, 6937420), (5818, 3468710), (7079, 2850820), (11636, 1734355), (14158, 1425410), (14545, 1387484), (20363, 991060), (28316, 712705), (29090, 693742), (35395, 570164), (40726, 495530), (49553, 407260), (58180, 346871), (70790, 285082), (81452, 247765), (99106, 203630), (101815, 198212), (141580, 142541)]