20289960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{18787}}^1$

素因数の和:18807

約数の個数: 64

約数和(自身を含む): 67636800

約数和(自身を除く): 47346840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 18787, 37574, 56361, 75148, 93935, 112722, 150296, 169083, 187870, 225444, 281805, 338166, 375740, 450888, 507249, 563610, 676332, 751480, 845415, 1014498, 1127220, 1352664, 1690830, 2028996, 2254440, 2536245, 3381660, 4057992, 5072490, 6763320, 10144980, 20289960]

約数ペア:

[(1, 20289960), (2, 10144980), (3, 6763320), (4, 5072490), (5, 4057992), (6, 3381660), (8, 2536245), (9, 2254440), (10, 2028996), (12, 1690830), (15, 1352664), (18, 1127220), (20, 1014498), (24, 845415), (27, 751480), (30, 676332), (36, 563610), (40, 507249), (45, 450888), (54, 375740), (60, 338166), (72, 281805), (90, 225444), (108, 187870), (120, 169083), (135, 150296), (180, 112722), (216, 93935), (270, 75148), (360, 56361), (540, 37574), (1080, 18787)]