20200760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 49014720

約数和(自身を除く): 28813960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 61, 68, 85, 122, 136, 170, 244, 305, 340, 487, 488, 610, 680, 974, 1037, 1220, 1948, 2074, 2435, 2440, 3896, 4148, 4870, 5185, 8279, 8296, 9740, 10370, 16558, 19480, 20740, 29707, 33116, 41395, 41480, 59414, 66232, 82790, 118828, 148535, 165580, 237656, 297070, 331160, 505019, 594140, 1010038, 1188280, 2020076, 2525095, 4040152, 5050190, 10100380, 20200760]

約数ペア:

[(1, 20200760), (2, 10100380), (4, 5050190), (5, 4040152), (8, 2525095), (10, 2020076), (17, 1188280), (20, 1010038), (34, 594140), (40, 505019), (61, 331160), (68, 297070), (85, 237656), (122, 165580), (136, 148535), (170, 118828), (244, 82790), (305, 66232), (340, 59414), (487, 41480), (488, 41395), (610, 33116), (680, 29707), (974, 20740), (1037, 19480), (1220, 16558), (1948, 10370), (2074, 9740), (2435, 8296), (2440, 8279), (3896, 5185), (4148, 4870)]