18406520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3803}}^1$

素因数の和:3836

約数の個数: 48

約数和(自身を含む): 45533880

約数和(自身を除く): 27127360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 3803, 4840, 7606, 15212, 19015, 30424, 38030, 41833, 76060, 83666, 152120, 167332, 209165, 334664, 418330, 460163, 836660, 920326, 1673320, 1840652, 2300815, 3681304, 4601630, 9203260, 18406520]

約数ペア:

[(1, 18406520), (2, 9203260), (4, 4601630), (5, 3681304), (8, 2300815), (10, 1840652), (11, 1673320), (20, 920326), (22, 836660), (40, 460163), (44, 418330), (55, 334664), (88, 209165), (110, 167332), (121, 152120), (220, 83666), (242, 76060), (440, 41833), (484, 38030), (605, 30424), (968, 19015), (1210, 15212), (2420, 7606), (3803, 4840)]