21387464

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20101}}^1$

素因数の和:20133

約数の個数: 32

約数和(自身を含む): 48244800

約数和(自身を除く): 26857336

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20101, 40202, 80404, 140707, 160808, 281414, 381919, 562828, 763838, 1125656, 1527676, 2673433, 3055352, 5346866, 10693732, 21387464]

約数ペア:

[(1, 21387464), (2, 10693732), (4, 5346866), (7, 3055352), (8, 2673433), (14, 1527676), (19, 1125656), (28, 763838), (38, 562828), (56, 381919), (76, 281414), (133, 160808), (152, 140707), (266, 80404), (532, 40202), (1064, 20101)]