19919802

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{73}}^2\times {\mathrm{89}}^1$

素因数の和:247

約数の個数: 48

約数和(自身を含む): 46681920

約数和(自身を除く): 26762118

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 73, 89, 146, 178, 219, 267, 438, 511, 534, 623, 1022, 1246, 1533, 1869, 3066, 3738, 5329, 6497, 10658, 12994, 15987, 19491, 31974, 37303, 38982, 45479, 74606, 90958, 111909, 136437, 223818, 272874, 474281, 948562, 1422843, 2845686, 3319967, 6639934, 9959901, 19919802]

約数ペア:

[(1, 19919802), (2, 9959901), (3, 6639934), (6, 3319967), (7, 2845686), (14, 1422843), (21, 948562), (42, 474281), (73, 272874), (89, 223818), (146, 136437), (178, 111909), (219, 90958), (267, 74606), (438, 45479), (511, 38982), (534, 37303), (623, 31974), (1022, 19491), (1246, 15987), (1533, 12994), (1869, 10658), (3066, 6497), (3738, 5329)]