20631420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1879}}^1$

素因数の和:1955

約数の個数: 72

約数和(自身を含む): 63641760

約数和(自身を除く): 43010340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 1879, 2196, 2745, 3660, 3758, 5490, 5637, 7516, 9395, 10980, 11274, 16911, 18790, 22548, 28185, 33822, 37580, 56370, 67644, 84555, 112740, 114619, 169110, 229238, 338220, 343857, 458476, 573095, 687714, 1031571, 1146190, 1375428, 1719285, 2063142, 2292380, 3438570, 4126284, 5157855, 6877140, 10315710, 20631420]

約数ペア:

[(1, 20631420), (2, 10315710), (3, 6877140), (4, 5157855), (5, 4126284), (6, 3438570), (9, 2292380), (10, 2063142), (12, 1719285), (15, 1375428), (18, 1146190), (20, 1031571), (30, 687714), (36, 573095), (45, 458476), (60, 343857), (61, 338220), (90, 229238), (122, 169110), (180, 114619), (183, 112740), (244, 84555), (305, 67644), (366, 56370), (549, 37580), (610, 33822), (732, 28185), (915, 22548), (1098, 18790), (1220, 16911), (1830, 11274), (1879, 10980), (2196, 9395), (2745, 7516), (3660, 5637), (3758, 5490)]