21980520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61057}}^1$

素因数の和:61074

約数の個数: 48

約数和(自身を含む): 71437860

約数和(自身を除く): 49457340

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 61057, 122114, 183171, 244228, 305285, 366342, 488456, 549513, 610570, 732684, 915855, 1099026, 1221140, 1465368, 1831710, 2198052, 2442280, 2747565, 3663420, 4396104, 5495130, 7326840, 10990260, 21980520]

約数ペア:

[(1, 21980520), (2, 10990260), (3, 7326840), (4, 5495130), (5, 4396104), (6, 3663420), (8, 2747565), (9, 2442280), (10, 2198052), (12, 1831710), (15, 1465368), (18, 1221140), (20, 1099026), (24, 915855), (30, 732684), (36, 610570), (40, 549513), (45, 488456), (60, 366342), (72, 305285), (90, 244228), (120, 183171), (180, 122114), (360, 61057)]