18396980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{397}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 44397696

約数和(自身を除く): 26000716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 331, 397, 662, 794, 1324, 1588, 1655, 1985, 2317, 2779, 3310, 3970, 4634, 5558, 6620, 7940, 9268, 11116, 11585, 13895, 23170, 27790, 46340, 55580, 131407, 262814, 525628, 657035, 919849, 1314070, 1839698, 2628140, 3679396, 4599245, 9198490, 18396980]

約数ペア:

[(1, 18396980), (2, 9198490), (4, 4599245), (5, 3679396), (7, 2628140), (10, 1839698), (14, 1314070), (20, 919849), (28, 657035), (35, 525628), (70, 262814), (140, 131407), (331, 55580), (397, 46340), (662, 27790), (794, 23170), (1324, 13895), (1588, 11585), (1655, 11116), (1985, 9268), (2317, 7940), (2779, 6620), (3310, 5558), (3970, 4634)]