21793456

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4217}}^1$

素因数の和:4261

約数の個数: 40

約数和(自身を含む): 47072880

約数和(自身を除く): 25279424

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4217, 5168, 8434, 16868, 33736, 67472, 71689, 80123, 143378, 160246, 286756, 320492, 573512, 640984, 1147024, 1281968, 1362091, 2724182, 5448364, 10896728, 21793456]

約数ペア:

[(1, 21793456), (2, 10896728), (4, 5448364), (8, 2724182), (16, 1362091), (17, 1281968), (19, 1147024), (34, 640984), (38, 573512), (68, 320492), (76, 286756), (136, 160246), (152, 143378), (272, 80123), (304, 71689), (323, 67472), (646, 33736), (1292, 16868), (2584, 8434), (4217, 5168)]