81530120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41597}}^1$

素因数の和:41622

約数の個数: 48

約数和(自身を含む): 213397740

約数和(自身を除く): 131867620

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41597, 83194, 166388, 207985, 291179, 332776, 415970, 582358, 831940, 1164716, 1455895, 1663880, 2038253, 2329432, 2911790, 4076506, 5823580, 8153012, 10191265, 11647160, 16306024, 20382530, 40765060, 81530120]

約数ペア:

[(1, 81530120), (2, 40765060), (4, 20382530), (5, 16306024), (7, 11647160), (8, 10191265), (10, 8153012), (14, 5823580), (20, 4076506), (28, 2911790), (35, 2329432), (40, 2038253), (49, 1663880), (56, 1455895), (70, 1164716), (98, 831940), (140, 582358), (196, 415970), (245, 332776), (280, 291179), (392, 207985), (490, 166388), (980, 83194), (1960, 41597)]