21867860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8221}}^1$

素因数の和:8256

約数の個数: 48

約数和(自身を含む): 55251840

約数和(自身を除く): 33383980

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8221, 16442, 32884, 41105, 57547, 82210, 115094, 156199, 164420, 230188, 287735, 312398, 575470, 624796, 780995, 1093393, 1150940, 1561990, 2186786, 3123980, 4373572, 5466965, 10933930, 21867860]

約数ペア:

[(1, 21867860), (2, 10933930), (4, 5466965), (5, 4373572), (7, 3123980), (10, 2186786), (14, 1561990), (19, 1150940), (20, 1093393), (28, 780995), (35, 624796), (38, 575470), (70, 312398), (76, 287735), (95, 230188), (133, 164420), (140, 156199), (190, 115094), (266, 82210), (380, 57547), (532, 41105), (665, 32884), (1330, 16442), (2660, 8221)]