20986620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1361}}^1$

素因数の和:1630

約数の個数: 48

約数和(自身を含む): 59034528

約数和(自身を除く): 38047908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1361, 1542, 2570, 2722, 3084, 3855, 4083, 5140, 5444, 6805, 7710, 8166, 13610, 15420, 16332, 20415, 27220, 40830, 81660, 349777, 699554, 1049331, 1399108, 1748885, 2098662, 3497770, 4197324, 5246655, 6995540, 10493310, 20986620]

約数ペア:

[(1, 20986620), (2, 10493310), (3, 6995540), (4, 5246655), (5, 4197324), (6, 3497770), (10, 2098662), (12, 1748885), (15, 1399108), (20, 1049331), (30, 699554), (60, 349777), (257, 81660), (514, 40830), (771, 27220), (1028, 20415), (1285, 16332), (1361, 15420), (1542, 13610), (2570, 8166), (2722, 7710), (3084, 6805), (3855, 5444), (4083, 5140)]