21666420

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{40123}}^1$

素因数の和:40141

約数の個数: 48

約数和(自身を含む): 67408320

約数和(自身を除く): 45741900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 40123, 80246, 120369, 160492, 200615, 240738, 361107, 401230, 481476, 601845, 722214, 802460, 1083321, 1203690, 1444428, 1805535, 2166642, 2407380, 3611070, 4333284, 5416605, 7222140, 10833210, 21666420]

約数ペア:

[(1, 21666420), (2, 10833210), (3, 7222140), (4, 5416605), (5, 4333284), (6, 3611070), (9, 2407380), (10, 2166642), (12, 1805535), (15, 1444428), (18, 1203690), (20, 1083321), (27, 802460), (30, 722214), (36, 601845), (45, 481476), (54, 401230), (60, 361107), (90, 240738), (108, 200615), (135, 160492), (180, 120369), (270, 80246), (540, 40123)]