21412980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{337}}^1\times {\mathrm{353}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 65329992

約数和(自身を除く): 43917012

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 337, 353, 674, 706, 1011, 1059, 1348, 1412, 1685, 1765, 2022, 2118, 3033, 3177, 3370, 3530, 4044, 4236, 5055, 5295, 6066, 6354, 6740, 7060, 10110, 10590, 12132, 12708, 15165, 15885, 20220, 21180, 30330, 31770, 60660, 63540, 118961, 237922, 356883, 475844, 594805, 713766, 1070649, 1189610, 1427532, 1784415, 2141298, 2379220, 3568830, 4282596, 5353245, 7137660, 10706490, 21412980]

約数ペア:

[(1, 21412980), (2, 10706490), (3, 7137660), (4, 5353245), (5, 4282596), (6, 3568830), (9, 2379220), (10, 2141298), (12, 1784415), (15, 1427532), (18, 1189610), (20, 1070649), (30, 713766), (36, 594805), (45, 475844), (60, 356883), (90, 237922), (180, 118961), (337, 63540), (353, 60660), (674, 31770), (706, 30330), (1011, 21180), (1059, 20220), (1348, 15885), (1412, 15165), (1685, 12708), (1765, 12132), (2022, 10590), (2118, 10110), (3033, 7060), (3177, 6740), (3370, 6354), (3530, 6066), (4044, 5295), (4236, 5055)]