20129890180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1\times {\mathrm{37013}}^1$

素因数の和:37476

約数の個数: 48

約数和(自身を含む): 42981249024

約数和(自身を除く): 22851358844

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 383, 710, 766, 1420, 1532, 1915, 3830, 7660, 27193, 37013, 54386, 74026, 108772, 135965, 148052, 185065, 271930, 370130, 543860, 740260, 2627923, 5255846, 10511692, 13139615, 14175979, 26279230, 28351958, 52558460, 56703916, 70879895, 141759790, 283519580, 1006494509, 2012989018, 4025978036, 5032472545, 10064945090, 20129890180]

約数ペア:

[(1, 20129890180), (2, 10064945090), (4, 5032472545), (5, 4025978036), (10, 2012989018), (20, 1006494509), (71, 283519580), (142, 141759790), (284, 70879895), (355, 56703916), (383, 52558460), (710, 28351958), (766, 26279230), (1420, 14175979), (1532, 13139615), (1915, 10511692), (3830, 5255846), (7660, 2627923), (27193, 740260), (37013, 543860), (54386, 370130), (74026, 271930), (108772, 185065), (135965, 148052)]