20941980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8513}}^1$

素因数の和:8566

約数の個数: 48

約数和(自身を含む): 60074784

約数和(自身を除く): 39132804

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8513, 17026, 25539, 34052, 42565, 51078, 85130, 102156, 127695, 170260, 255390, 349033, 510780, 698066, 1047099, 1396132, 1745165, 2094198, 3490330, 4188396, 5235495, 6980660, 10470990, 20941980]

約数ペア:

[(1, 20941980), (2, 10470990), (3, 6980660), (4, 5235495), (5, 4188396), (6, 3490330), (10, 2094198), (12, 1745165), (15, 1396132), (20, 1047099), (30, 698066), (41, 510780), (60, 349033), (82, 255390), (123, 170260), (164, 127695), (205, 102156), (246, 85130), (410, 51078), (492, 42565), (615, 34052), (820, 25539), (1230, 17026), (2460, 8513)]