20907220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1487}}^1$

素因数の和:1552

約数の個数: 48

約数和(自身を含む): 47496960

約数和(自身を除く): 26589740

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1406, 1487, 2812, 2974, 3515, 5948, 7030, 7435, 14060, 14870, 28253, 29740, 55019, 56506, 110038, 113012, 141265, 220076, 275095, 282530, 550190, 565060, 1045361, 1100380, 2090722, 4181444, 5226805, 10453610, 20907220]

約数ペア:

[(1, 20907220), (2, 10453610), (4, 5226805), (5, 4181444), (10, 2090722), (19, 1100380), (20, 1045361), (37, 565060), (38, 550190), (74, 282530), (76, 275095), (95, 220076), (148, 141265), (185, 113012), (190, 110038), (370, 56506), (380, 55019), (703, 29740), (740, 28253), (1406, 14870), (1487, 14060), (2812, 7435), (2974, 7030), (3515, 5948)]