19484620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15971}}^1$

素因数の和:16041

約数の個数: 24

約数和(自身を含む): 41591088

約数和(自身を除く): 22106468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15971, 31942, 63884, 79855, 159710, 319420, 974231, 1948462, 3896924, 4871155, 9742310, 19484620]

約数ペア:

[(1, 19484620), (2, 9742310), (4, 4871155), (5, 3896924), (10, 1948462), (20, 974231), (61, 319420), (122, 159710), (244, 79855), (305, 63884), (610, 31942), (1220, 15971)]