20507360

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1913}}^1$

素因数の和:1995

約数の個数: 48

約数和(自身を含む): 49197456

約数和(自身を除く): 28690096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1913, 2144, 2680, 3826, 5360, 7652, 9565, 10720, 15304, 19130, 30608, 38260, 61216, 76520, 128171, 153040, 256342, 306080, 512684, 640855, 1025368, 1281710, 2050736, 2563420, 4101472, 5126840, 10253680, 20507360]

約数ペア:

[(1, 20507360), (2, 10253680), (4, 5126840), (5, 4101472), (8, 2563420), (10, 2050736), (16, 1281710), (20, 1025368), (32, 640855), (40, 512684), (67, 306080), (80, 256342), (134, 153040), (160, 128171), (268, 76520), (335, 61216), (536, 38260), (670, 30608), (1072, 19130), (1340, 15304), (1913, 10720), (2144, 9565), (2680, 7652), (3826, 5360)]