19998032

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{419}}^1$

素因数の和:603

約数の個数: 40

約数和(自身を含む): 41143200

約数和(自身を除く): 21145168

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 157, 304, 314, 419, 628, 838, 1256, 1676, 2512, 2983, 3352, 5966, 6704, 7961, 11932, 15922, 23864, 31844, 47728, 63688, 65783, 127376, 131566, 263132, 526264, 1052528, 1249877, 2499754, 4999508, 9999016, 19998032]

約数ペア:

[(1, 19998032), (2, 9999016), (4, 4999508), (8, 2499754), (16, 1249877), (19, 1052528), (38, 526264), (76, 263132), (152, 131566), (157, 127376), (304, 65783), (314, 63688), (419, 47728), (628, 31844), (838, 23864), (1256, 15922), (1676, 11932), (2512, 7961), (2983, 6704), (3352, 5966)]