21518792

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{2113}}^1$

素因数の和:2205

約数の個数: 32

約数和(自身を含む): 43125600

約数和(自身を除く): 21606808

約数列:

[1, 2, 4, 8, 19, 38, 67, 76, 134, 152, 268, 536, 1273, 2113, 2546, 4226, 5092, 8452, 10184, 16904, 40147, 80294, 141571, 160588, 283142, 321176, 566284, 1132568, 2689849, 5379698, 10759396, 21518792]

約数ペア:

[(1, 21518792), (2, 10759396), (4, 5379698), (8, 2689849), (19, 1132568), (38, 566284), (67, 321176), (76, 283142), (134, 160588), (152, 141571), (268, 80294), (536, 40147), (1273, 16904), (2113, 10184), (2546, 8452), (4226, 5092)]