21427320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178561}}^1$

素因数の和:178575

約数の個数: 32

約数和(自身を含む): 64282320

約数和(自身を除く): 42855000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178561, 357122, 535683, 714244, 892805, 1071366, 1428488, 1785610, 2142732, 2678415, 3571220, 4285464, 5356830, 7142440, 10713660, 21427320]

約数ペア:

[(1, 21427320), (2, 10713660), (3, 7142440), (4, 5356830), (5, 4285464), (6, 3571220), (8, 2678415), (10, 2142732), (12, 1785610), (15, 1428488), (20, 1071366), (24, 892805), (30, 714244), (40, 535683), (60, 357122), (120, 178561)]