20686980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{619}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 58121280

約数和(自身を除く): 37434300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 557, 619, 1114, 1238, 1671, 1857, 2228, 2476, 2785, 3095, 3342, 3714, 5570, 6190, 6684, 7428, 8355, 9285, 11140, 12380, 16710, 18570, 33420, 37140, 344783, 689566, 1034349, 1379132, 1723915, 2068698, 3447830, 4137396, 5171745, 6895660, 10343490, 20686980]

約数ペア:

[(1, 20686980), (2, 10343490), (3, 6895660), (4, 5171745), (5, 4137396), (6, 3447830), (10, 2068698), (12, 1723915), (15, 1379132), (20, 1034349), (30, 689566), (60, 344783), (557, 37140), (619, 33420), (1114, 18570), (1238, 16710), (1671, 12380), (1857, 11140), (2228, 9285), (2476, 8355), (2785, 7428), (3095, 6684), (3342, 6190), (3714, 5570)]