21147518

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{6961}}^1$

素因数の和:7008

約数の個数: 24

約数和(自身を含む): 38096064

約数和(自身を除く): 16948546

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 434, 1519, 3038, 6961, 13922, 48727, 97454, 215791, 341089, 431582, 682178, 1510537, 3021074, 10573759, 21147518]

約数ペア:

[(1, 21147518), (2, 10573759), (7, 3021074), (14, 1510537), (31, 682178), (49, 431582), (62, 341089), (98, 215791), (217, 97454), (434, 48727), (1519, 13922), (3038, 6961)]