21369136

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 44153424

約数和(自身を除く): 22784288

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 251, 272, 313, 502, 626, 1004, 1252, 2008, 2504, 4016, 4267, 5008, 5321, 8534, 10642, 17068, 21284, 34136, 42568, 68272, 78563, 85136, 157126, 314252, 628504, 1257008, 1335571, 2671142, 5342284, 10684568, 21369136]

約数ペア:

[(1, 21369136), (2, 10684568), (4, 5342284), (8, 2671142), (16, 1335571), (17, 1257008), (34, 628504), (68, 314252), (136, 157126), (251, 85136), (272, 78563), (313, 68272), (502, 42568), (626, 34136), (1004, 21284), (1252, 17068), (2008, 10642), (2504, 8534), (4016, 5321), (4267, 5008)]